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Finding the Fourth Proportional to 616,830.61, 922,687.12 and 579,039.25

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Solution

The fourth proportional to 616,830.61, 922,687.12 and 579,039.25 is: 866,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,830.61 : 922,687.12 = 579,039.25 : x
  2. Step 2: Convert to fraction form
    616,830.61/922,687.12 = 579,039.25/x
  3. Step 3: Cross multiply
    616,830.61x = 922,687.12 × 579,039.25
  4. Step 4: Simplify right side
    616,830.61x = 534,272,057,949.46
  5. Step 5: Solve for x
    x = 534,272,057,949.46/616,830.61
  6. Step 6: Final answer
    x = 866,156.85

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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.