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Finding the Fourth Proportional to 58,719.60, 88,109.64 and 29,136.78

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Solution

The fourth proportional to 58,719.60, 88,109.64 and 29,136.78 is: 43,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,719.60 : 88,109.64 = 29,136.78 : x
  2. Step 2: Convert to fraction form
    58,719.60/88,109.64 = 29,136.78/x
  3. Step 3: Cross multiply
    58,719.60x = 88,109.64 × 29,136.78
  4. Step 4: Simplify right side
    58,719.60x = 2,567,231,196.56
  5. Step 5: Solve for x
    x = 2,567,231,196.56/58,719.60
  6. Step 6: Final answer
    x = 43,720.18

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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.