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Finding the Fourth Proportional to 58,704.80, 88,064.40 and 19,251.20

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Solution

The fourth proportional to 58,704.80, 88,064.40 and 19,251.20 is: 28,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,704.80 : 88,064.40 = 19,251.20 : x
  2. Step 2: Convert to fraction form
    58,704.80/88,064.40 = 19,251.20/x
  3. Step 3: Cross multiply
    58,704.80x = 88,064.40 × 19,251.20
  4. Step 4: Simplify right side
    58,704.80x = 1,695,345,377.28
  5. Step 5: Solve for x
    x = 1,695,345,377.28/58,704.80
  6. Step 6: Final answer
    x = 28,879.16

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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.