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Finding the Fourth Proportional to 86,502.90, 119,353.59 and 48,769.86

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Solution

The fourth proportional to 86,502.90, 119,353.59 and 48,769.86 is: 67,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,502.90 : 119,353.59 = 48,769.86 : x
  2. Step 2: Convert to fraction form
    86,502.90/119,353.59 = 48,769.86/x
  3. Step 3: Cross multiply
    86,502.90x = 119,353.59 × 48,769.86
  4. Step 4: Simplify right side
    86,502.90x = 5,820,857,874.80
  5. Step 5: Solve for x
    x = 5,820,857,874.80/86,502.90
  6. Step 6: Final answer
    x = 67,290.90

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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.