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Finding the Fourth Proportional to 98,543.70, 147,815.55 and 92,711.70

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Solution

The fourth proportional to 98,543.70, 147,815.55 and 92,711.70 is: 139,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,543.70 : 147,815.55 = 92,711.70 : x
  2. Step 2: Convert to fraction form
    98,543.70/147,815.55 = 92,711.70/x
  3. Step 3: Cross multiply
    98,543.70x = 147,815.55 × 92,711.70
  4. Step 4: Simplify right side
    98,543.70x = 13,704,230,926.94
  5. Step 5: Solve for x
    x = 13,704,230,926.94/98,543.70
  6. Step 6: Final answer
    x = 139,067.55

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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.