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Finding the Fourth Proportional to 698,763.54, 964,287.89 and 392,841.29

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Solution

The fourth proportional to 698,763.54, 964,287.89 and 392,841.29 is: 542,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,763.54 : 964,287.89 = 392,841.29 : x
  2. Step 2: Convert to fraction form
    698,763.54/964,287.89 = 392,841.29/x
  3. Step 3: Cross multiply
    698,763.54x = 964,287.89 × 392,841.29
  4. Step 4: Simplify right side
    698,763.54x = 378,812,100,558.65
  5. Step 5: Solve for x
    x = 378,812,100,558.65/698,763.54
  6. Step 6: Final answer
    x = 542,117.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.