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Finding the Fourth Proportional to 674,557.78, 930,450.45 and 432,456.88

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Solution

The fourth proportional to 674,557.78, 930,450.45 and 432,456.88 is: 596,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,557.78 : 930,450.45 = 432,456.88 : x
  2. Step 2: Convert to fraction form
    674,557.78/930,450.45 = 432,456.88/x
  3. Step 3: Cross multiply
    674,557.78x = 930,450.45 × 432,456.88
  4. Step 4: Simplify right side
    674,557.78x = 402,379,698,601.60
  5. Step 5: Solve for x
    x = 402,379,698,601.60/674,557.78
  6. Step 6: Final answer
    x = 596,508.87

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Double scale
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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.