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Finding the Fourth Proportional to 89,568.88, 123,605.04 and 49,281.76

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Solution

The fourth proportional to 89,568.88, 123,605.04 and 49,281.76 is: 68,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,568.88 : 123,605.04 = 49,281.76 : x
  2. Step 2: Convert to fraction form
    89,568.88/123,605.04 = 49,281.76/x
  3. Step 3: Cross multiply
    89,568.88x = 123,605.04 × 49,281.76
  4. Step 4: Simplify right side
    89,568.88x = 6,091,473,916.07
  5. Step 5: Solve for x
    x = 6,091,473,916.07/89,568.88
  6. Step 6: Final answer
    x = 68,008.82

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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.