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Finding the Fourth Proportional to 698,748.22, 964,306.76 and 392,920.89

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Solution

The fourth proportional to 698,748.22, 964,306.76 and 392,920.89 is: 542,250.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,748.22 : 964,306.76 = 392,920.89 : x
  2. Step 2: Convert to fraction form
    698,748.22/964,306.76 = 392,920.89/x
  3. Step 3: Cross multiply
    698,748.22x = 964,306.76 × 392,920.89
  4. Step 4: Simplify right side
    698,748.22x = 378,896,270,372.22
  5. Step 5: Solve for x
    x = 378,896,270,372.22/698,748.22
  6. Step 6: Final answer
    x = 542,250.07

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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.