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Finding the Fourth Proportional to 118,613.81, 177,920.84 and 48,493.13

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Solution

The fourth proportional to 118,613.81, 177,920.84 and 48,493.13 is: 72,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,613.81 : 177,920.84 = 48,493.13 : x
  2. Step 2: Convert to fraction form
    118,613.81/177,920.84 = 48,493.13/x
  3. Step 3: Cross multiply
    118,613.81x = 177,920.84 × 48,493.13
  4. Step 4: Simplify right side
    118,613.81x = 8,627,937,655.46
  5. Step 5: Solve for x
    x = 8,627,937,655.46/118,613.81
  6. Step 6: Final answer
    x = 72,739.74

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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.