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Finding the Fourth Proportional to 58,122.87, 87,128.56 and 18,652.98

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Solution

The fourth proportional to 58,122.87, 87,128.56 and 18,652.98 is: 27,961.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,122.87 : 87,128.56 = 18,652.98 : x
  2. Step 2: Convert to fraction form
    58,122.87/87,128.56 = 18,652.98/x
  3. Step 3: Cross multiply
    58,122.87x = 87,128.56 × 18,652.98
  4. Step 4: Simplify right side
    58,122.87x = 1,625,207,637.16
  5. Step 5: Solve for x
    x = 1,625,207,637.16/58,122.87
  6. Step 6: Final answer
    x = 27,961.59

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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.