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Finding the Fourth Proportional to 69,306.84, 103,458.87 and 60,899.31

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Solution

The fourth proportional to 69,306.84, 103,458.87 and 60,899.31 is: 90,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,306.84 : 103,458.87 = 60,899.31 : x
  2. Step 2: Convert to fraction form
    69,306.84/103,458.87 = 60,899.31/x
  3. Step 3: Cross multiply
    69,306.84x = 103,458.87 × 60,899.31
  4. Step 4: Simplify right side
    69,306.84x = 6,300,573,796.38
  5. Step 5: Solve for x
    x = 6,300,573,796.38/69,306.84
  6. Step 6: Final answer
    x = 90,908.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.