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Finding the Fourth Proportional to 58,424.40, 87,694.20 and 28,875.60

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Solution

The fourth proportional to 58,424.40, 87,694.20 and 28,875.60 is: 43,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,424.40 : 87,694.20 = 28,875.60 : x
  2. Step 2: Convert to fraction form
    58,424.40/87,694.20 = 28,875.60/x
  3. Step 3: Cross multiply
    58,424.40x = 87,694.20 × 28,875.60
  4. Step 4: Simplify right side
    58,424.40x = 2,532,222,641.52
  5. Step 5: Solve for x
    x = 2,532,222,641.52/58,424.40
  6. Step 6: Final answer
    x = 43,341.87

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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.