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Finding the Fourth Proportional to 605,720.40, 906,430.20 and 527,691.60

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Solution

The fourth proportional to 605,720.40, 906,430.20 and 527,691.60 is: 789,664.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,720.40 : 906,430.20 = 527,691.60 : x
  2. Step 2: Convert to fraction form
    605,720.40/906,430.20 = 527,691.60/x
  3. Step 3: Cross multiply
    605,720.40x = 906,430.20 × 527,691.60
  4. Step 4: Simplify right side
    605,720.40x = 478,315,602,526.32
  5. Step 5: Solve for x
    x = 478,315,602,526.32/605,720.40
  6. Step 6: Final answer
    x = 789,664.01

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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.