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Finding the Fourth Proportional to 89,912.59, 124,070.54 and 49,623.76

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Solution

The fourth proportional to 89,912.59, 124,070.54 and 49,623.76 is: 68,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,912.59 : 124,070.54 = 49,623.76 : x
  2. Step 2: Convert to fraction form
    89,912.59/124,070.54 = 49,623.76/x
  3. Step 3: Cross multiply
    89,912.59x = 124,070.54 × 49,623.76
  4. Step 4: Simplify right side
    89,912.59x = 6,156,846,053.04
  5. Step 5: Solve for x
    x = 6,156,846,053.04/89,912.59
  6. Step 6: Final answer
    x = 68,475.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.