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Finding the Fourth Proportional to 139,613.65, 209,341.14 and 95,294.05

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Solution

The fourth proportional to 139,613.65, 209,341.14 and 95,294.05 is: 142,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,613.65 : 209,341.14 = 95,294.05 : x
  2. Step 2: Convert to fraction form
    139,613.65/209,341.14 = 95,294.05/x
  3. Step 3: Cross multiply
    139,613.65x = 209,341.14 × 95,294.05
  4. Step 4: Simplify right side
    139,613.65x = 19,948,965,062.22
  5. Step 5: Solve for x
    x = 19,948,965,062.22/139,613.65
  6. Step 6: Final answer
    x = 142,886.92

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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.