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Finding the Fourth Proportional to 58,463.60, 87,637.80 and 28,857.20

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Solution

The fourth proportional to 58,463.60, 87,637.80 and 28,857.20 is: 43,257.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,463.60 : 87,637.80 = 28,857.20 : x
  2. Step 2: Convert to fraction form
    58,463.60/87,637.80 = 28,857.20/x
  3. Step 3: Cross multiply
    58,463.60x = 87,637.80 × 28,857.20
  4. Step 4: Simplify right side
    58,463.60x = 2,528,981,522.16
  5. Step 5: Solve for x
    x = 2,528,981,522.16/58,463.60
  6. Step 6: Final answer
    x = 43,257.37

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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.