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Finding the Fourth Proportional to 58,154.80, 87,627.87 and 47,855.80

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Solution

The fourth proportional to 58,154.80, 87,627.87 and 47,855.80 is: 72,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,154.80 : 87,627.87 = 47,855.80 : x
  2. Step 2: Convert to fraction form
    58,154.80/87,627.87 = 47,855.80/x
  3. Step 3: Cross multiply
    58,154.80x = 87,627.87 × 47,855.80
  4. Step 4: Simplify right side
    58,154.80x = 4,193,501,821.15
  5. Step 5: Solve for x
    x = 4,193,501,821.15/58,154.80
  6. Step 6: Final answer
    x = 72,109.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.