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Finding the Fourth Proportional to 58,985.72, 81,400.41 and 32,128.14

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Solution

The fourth proportional to 58,985.72, 81,400.41 and 32,128.14 is: 44,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,985.72 : 81,400.41 = 32,128.14 : x
  2. Step 2: Convert to fraction form
    58,985.72/81,400.41 = 32,128.14/x
  3. Step 3: Cross multiply
    58,985.72x = 81,400.41 × 32,128.14
  4. Step 4: Simplify right side
    58,985.72x = 2,615,244,073.79
  5. Step 5: Solve for x
    x = 2,615,244,073.79/58,985.72
  6. Step 6: Final answer
    x = 44,336.90

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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.