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Finding the Fourth Proportional to 616,774.80, 926,717.40 and 392,242.80

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Solution

The fourth proportional to 616,774.80, 926,717.40 and 392,242.80 is: 589,353.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,774.80 : 926,717.40 = 392,242.80 : x
  2. Step 2: Convert to fraction form
    616,774.80/926,717.40 = 392,242.80/x
  3. Step 3: Cross multiply
    616,774.80x = 926,717.40 × 392,242.80
  4. Step 4: Simplify right side
    616,774.80x = 363,498,227,784.72
  5. Step 5: Solve for x
    x = 363,498,227,784.72/616,774.80
  6. Step 6: Final answer
    x = 589,353.24

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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.