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Finding the Fourth Proportional to 79,691.76, 119,482.08 and 35,294.28

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Solution

The fourth proportional to 79,691.76, 119,482.08 and 35,294.28 is: 52,916.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,691.76 : 119,482.08 = 35,294.28 : x
  2. Step 2: Convert to fraction form
    79,691.76/119,482.08 = 35,294.28/x
  3. Step 3: Cross multiply
    79,691.76x = 119,482.08 × 35,294.28
  4. Step 4: Simplify right side
    79,691.76x = 4,217,033,986.50
  5. Step 5: Solve for x
    x = 4,217,033,986.50/79,691.76
  6. Step 6: Final answer
    x = 52,916.81

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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.