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Finding the Fourth Proportional to 970,552,693.80, 1,455,829,040.70 and 644,035,343.40

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Solution

The fourth proportional to 970,552,693.80, 1,455,829,040.70 and 644,035,343.40 is: 966,053,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,552,693.80 : 1,455,829,040.70 = 644,035,343.40 : x
  2. Step 2: Convert to fraction form
    970,552,693.80/1,455,829,040.70 = 644,035,343.40/x
  3. Step 3: Cross multiply
    970,552,693.80x = 1,455,829,040.70 × 644,035,343.40
  4. Step 4: Simplify right side
    970,552,693.80x = 937,605,356,158,917,120
  5. Step 5: Solve for x
    x = 937,605,356,158,917,120/970,552,693.80
  6. Step 6: Final answer
    x = 966,053,015.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.