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Finding the Fourth Proportional to 616,871.20, 925,306.80 and 476,730.40

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Solution

The fourth proportional to 616,871.20, 925,306.80 and 476,730.40 is: 715,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,871.20 : 925,306.80 = 476,730.40 : x
  2. Step 2: Convert to fraction form
    616,871.20/925,306.80 = 476,730.40/x
  3. Step 3: Cross multiply
    616,871.20x = 925,306.80 × 476,730.40
  4. Step 4: Simplify right side
    616,871.20x = 441,121,880,886.72
  5. Step 5: Solve for x
    x = 441,121,880,886.72/616,871.20
  6. Step 6: Final answer
    x = 715,095.60

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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.