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Finding the Fourth Proportional to 708,084.01, 977,143.60 and 385,796.45

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Solution

The fourth proportional to 708,084.01, 977,143.60 and 385,796.45 is: 532,392.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,084.01 : 977,143.60 = 385,796.45 : x
  2. Step 2: Convert to fraction form
    708,084.01/977,143.60 = 385,796.45/x
  3. Step 3: Cross multiply
    708,084.01x = 977,143.60 × 385,796.45
  4. Step 4: Simplify right side
    708,084.01x = 376,978,534,945.33
  5. Step 5: Solve for x
    x = 376,978,534,945.33/708,084.01
  6. Step 6: Final answer
    x = 532,392.38

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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.