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Finding the Fourth Proportional to 58,147.60, 87,265.56 and 42,605.84

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Solution

The fourth proportional to 58,147.60, 87,265.56 and 42,605.84 is: 63,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,147.60 : 87,265.56 = 42,605.84 : x
  2. Step 2: Convert to fraction form
    58,147.60/87,265.56 = 42,605.84/x
  3. Step 3: Cross multiply
    58,147.60x = 87,265.56 × 42,605.84
  4. Step 4: Simplify right side
    58,147.60x = 3,718,022,486.87
  5. Step 5: Solve for x
    x = 3,718,022,486.87/58,147.60
  6. Step 6: Final answer
    x = 63,941.12

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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.