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Finding the Fourth Proportional to 605,187.40, 907,781.10 and 574,083.40

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Solution

The fourth proportional to 605,187.40, 907,781.10 and 574,083.40 is: 861,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,187.40 : 907,781.10 = 574,083.40 : x
  2. Step 2: Convert to fraction form
    605,187.40/907,781.10 = 574,083.40/x
  3. Step 3: Cross multiply
    605,187.40x = 907,781.10 × 574,083.40
  4. Step 4: Simplify right side
    605,187.40x = 521,142,060,343.74
  5. Step 5: Solve for x
    x = 521,142,060,343.74/605,187.40
  6. Step 6: Final answer
    x = 861,125.10

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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.