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Finding the Fourth Proportional to 100,545.29, 138,799.74 and 58,095.62

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Solution

The fourth proportional to 100,545.29, 138,799.74 and 58,095.62 is: 80,199.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,545.29 : 138,799.74 = 58,095.62 : x
  2. Step 2: Convert to fraction form
    100,545.29/138,799.74 = 58,095.62/x
  3. Step 3: Cross multiply
    100,545.29x = 138,799.74 × 58,095.62
  4. Step 4: Simplify right side
    100,545.29x = 8,063,656,951.14
  5. Step 5: Solve for x
    x = 8,063,656,951.14/100,545.29
  6. Step 6: Final answer
    x = 80,199.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.