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Finding the Fourth Proportional to 57,681.78, 86,522.16 and 18,238.92

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Solution

The fourth proportional to 57,681.78, 86,522.16 and 18,238.92 is: 27,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,681.78 : 86,522.16 = 18,238.92 : x
  2. Step 2: Convert to fraction form
    57,681.78/86,522.16 = 18,238.92/x
  3. Step 3: Cross multiply
    57,681.78x = 86,522.16 × 18,238.92
  4. Step 4: Simplify right side
    57,681.78x = 1,578,070,754.47
  5. Step 5: Solve for x
    x = 1,578,070,754.47/57,681.78
  6. Step 6: Final answer
    x = 27,358.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.