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Finding the Fourth Proportional to 117,138.05, 175,670.71 and 42,248.46

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Solution

The fourth proportional to 117,138.05, 175,670.71 and 42,248.46 is: 63,359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,138.05 : 175,670.71 = 42,248.46 : x
  2. Step 2: Convert to fraction form
    117,138.05/175,670.71 = 42,248.46/x
  3. Step 3: Cross multiply
    117,138.05x = 175,670.71 × 42,248.46
  4. Step 4: Simplify right side
    117,138.05x = 7,421,816,964.61
  5. Step 5: Solve for x
    x = 7,421,816,964.61/117,138.05
  6. Step 6: Final answer
    x = 63,359.57

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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.