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Finding the Fourth Proportional to 117,700.78, 176,573.04 and 38,820.55

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Solution

The fourth proportional to 117,700.78, 176,573.04 and 38,820.55 is: 58,238.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,700.78 : 176,573.04 = 38,820.55 : x
  2. Step 2: Convert to fraction form
    117,700.78/176,573.04 = 38,820.55/x
  3. Step 3: Cross multiply
    117,700.78x = 176,573.04 × 38,820.55
  4. Step 4: Simplify right side
    117,700.78x = 6,854,662,527.97
  5. Step 5: Solve for x
    x = 6,854,662,527.97/117,700.78
  6. Step 6: Final answer
    x = 58,238.04

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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.