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Finding the Fourth Proportional to 58,340.59, 87,515.47 and 28,742.28

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Solution

The fourth proportional to 58,340.59, 87,515.47 and 28,742.28 is: 43,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,340.59 : 87,515.47 = 28,742.28 : x
  2. Step 2: Convert to fraction form
    58,340.59/87,515.47 = 28,742.28/x
  3. Step 3: Cross multiply
    58,340.59x = 87,515.47 × 28,742.28
  4. Step 4: Simplify right side
    58,340.59x = 2,515,393,850.82
  5. Step 5: Solve for x
    x = 2,515,393,850.82/58,340.59
  6. Step 6: Final answer
    x = 43,115.68

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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.