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Finding the Fourth Proportional to 653,686.87, 902,126.42 and 492,257.11

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Solution

The fourth proportional to 653,686.87, 902,126.42 and 492,257.11 is: 679,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,686.87 : 902,126.42 = 492,257.11 : x
  2. Step 2: Convert to fraction form
    653,686.87/902,126.42 = 492,257.11/x
  3. Step 3: Cross multiply
    653,686.87x = 902,126.42 × 492,257.11
  4. Step 4: Simplify right side
    653,686.87x = 444,078,141,902.56
  5. Step 5: Solve for x
    x = 444,078,141,902.56/653,686.87
  6. Step 6: Final answer
    x = 679,343.83

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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.