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Finding the Fourth Proportional to 58,731.60, 87,951.60 and 47,067.60

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Solution

The fourth proportional to 58,731.60, 87,951.60 and 47,067.60 is: 70,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,731.60 : 87,951.60 = 47,067.60 : x
  2. Step 2: Convert to fraction form
    58,731.60/87,951.60 = 47,067.60/x
  3. Step 3: Cross multiply
    58,731.60x = 87,951.60 × 47,067.60
  4. Step 4: Simplify right side
    58,731.60x = 4,139,670,728.16
  5. Step 5: Solve for x
    x = 4,139,670,728.16/58,731.60
  6. Step 6: Final answer
    x = 70,484.56

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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.