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Finding the Fourth Proportional to 115,397.76, 173,169.54 and 45,275.52

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Solution

The fourth proportional to 115,397.76, 173,169.54 and 45,275.52 is: 67,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,397.76 : 173,169.54 = 45,275.52 : x
  2. Step 2: Convert to fraction form
    115,397.76/173,169.54 = 45,275.52/x
  3. Step 3: Cross multiply
    115,397.76x = 173,169.54 × 45,275.52
  4. Step 4: Simplify right side
    115,397.76x = 7,840,340,971.66
  5. Step 5: Solve for x
    x = 7,840,340,971.66/115,397.76
  6. Step 6: Final answer
    x = 67,941.88

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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.