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Finding the Fourth Proportional to 621,668.79, 928,964.07 and 466,785

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Solution

The fourth proportional to 621,668.79, 928,964.07 and 466,785 is: 697,520.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,668.79 : 928,964.07 = 466,785 : x
  2. Step 2: Convert to fraction form
    621,668.79/928,964.07 = 466,785/x
  3. Step 3: Cross multiply
    621,668.79x = 928,964.07 × 466,785
  4. Step 4: Simplify right side
    621,668.79x = 433,626,493,414.95
  5. Step 5: Solve for x
    x = 433,626,493,414.95/621,668.79
  6. Step 6: Final answer
    x = 697,520.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.