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Finding the Fourth Proportional to 577,862.70, 866,794.05 and 388,905.90

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Solution

The fourth proportional to 577,862.70, 866,794.05 and 388,905.90 is: 583,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,862.70 : 866,794.05 = 388,905.90 : x
  2. Step 2: Convert to fraction form
    577,862.70/866,794.05 = 388,905.90/x
  3. Step 3: Cross multiply
    577,862.70x = 866,794.05 × 388,905.90
  4. Step 4: Simplify right side
    577,862.70x = 337,101,320,129.90
  5. Step 5: Solve for x
    x = 337,101,320,129.90/577,862.70
  6. Step 6: Final answer
    x = 583,358.85

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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.