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Finding the Fourth Proportional to 117,173.19, 175,654.55 and 42,275.73

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Solution

The fourth proportional to 117,173.19, 175,654.55 and 42,275.73 is: 63,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,173.19 : 175,654.55 = 42,275.73 : x
  2. Step 2: Convert to fraction form
    117,173.19/175,654.55 = 42,275.73/x
  3. Step 3: Cross multiply
    117,173.19x = 175,654.55 × 42,275.73
  4. Step 4: Simplify right side
    117,173.19x = 7,425,924,117.69
  5. Step 5: Solve for x
    x = 7,425,924,117.69/117,173.19
  6. Step 6: Final answer
    x = 63,375.62

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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.