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Finding the Fourth Proportional to 697,971.72, 962,955.62 and 456,395.70

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Solution

The fourth proportional to 697,971.72, 962,955.62 and 456,395.70 is: 629,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,971.72 : 962,955.62 = 456,395.70 : x
  2. Step 2: Convert to fraction form
    697,971.72/962,955.62 = 456,395.70/x
  3. Step 3: Cross multiply
    697,971.72x = 962,955.62 × 456,395.70
  4. Step 4: Simplify right side
    697,971.72x = 439,488,804,258.83
  5. Step 5: Solve for x
    x = 439,488,804,258.83/697,971.72
  6. Step 6: Final answer
    x = 629,665.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.