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Finding the Fourth Proportional to 98,490.74, 147,750.68 and 36,156.38

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Solution

The fourth proportional to 98,490.74, 147,750.68 and 36,156.38 is: 54,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,490.74 : 147,750.68 = 36,156.38 : x
  2. Step 2: Convert to fraction form
    98,490.74/147,750.68 = 36,156.38/x
  3. Step 3: Cross multiply
    98,490.74x = 147,750.68 × 36,156.38
  4. Step 4: Simplify right side
    98,490.74x = 5,342,129,082.98
  5. Step 5: Solve for x
    x = 5,342,129,082.98/98,490.74
  6. Step 6: Final answer
    x = 54,239.91

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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.