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Finding the Fourth Proportional to 117,892.40, 176,838.60 and 29,145.20

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Solution

The fourth proportional to 117,892.40, 176,838.60 and 29,145.20 is: 43,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,892.40 : 176,838.60 = 29,145.20 : x
  2. Step 2: Convert to fraction form
    117,892.40/176,838.60 = 29,145.20/x
  3. Step 3: Cross multiply
    117,892.40x = 176,838.60 × 29,145.20
  4. Step 4: Simplify right side
    117,892.40x = 5,153,996,364.72
  5. Step 5: Solve for x
    x = 5,153,996,364.72/117,892.40
  6. Step 6: Final answer
    x = 43,717.80

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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.