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Finding the Fourth Proportional to 58,330.70, 87,508.82 and 18,891.80

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Solution

The fourth proportional to 58,330.70, 87,508.82 and 18,891.80 is: 28,341.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,330.70 : 87,508.82 = 18,891.80 : x
  2. Step 2: Convert to fraction form
    58,330.70/87,508.82 = 18,891.80/x
  3. Step 3: Cross multiply
    58,330.70x = 87,508.82 × 18,891.80
  4. Step 4: Simplify right side
    58,330.70x = 1,653,199,031.22
  5. Step 5: Solve for x
    x = 1,653,199,031.22/58,330.70
  6. Step 6: Final answer
    x = 28,341.83

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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.