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Finding the Fourth Proportional to 117,715.40, 176,578.54 and 38,836.52

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Solution

The fourth proportional to 117,715.40, 176,578.54 and 38,836.52 is: 58,256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,715.40 : 176,578.54 = 38,836.52 : x
  2. Step 2: Convert to fraction form
    117,715.40/176,578.54 = 38,836.52/x
  3. Step 3: Cross multiply
    117,715.40x = 176,578.54 × 38,836.52
  4. Step 4: Simplify right side
    117,715.40x = 6,857,696,000.28
  5. Step 5: Solve for x
    x = 6,857,696,000.28/117,715.40
  6. Step 6: Final answer
    x = 58,256.57

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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.