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Finding the Fourth Proportional to 74,877.96, 103,306.71 and 49,396.98

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Solution

The fourth proportional to 74,877.96, 103,306.71 and 49,396.98 is: 68,151.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,877.96 : 103,306.71 = 49,396.98 : x
  2. Step 2: Convert to fraction form
    74,877.96/103,306.71 = 49,396.98/x
  3. Step 3: Cross multiply
    74,877.96x = 103,306.71 × 49,396.98
  4. Step 4: Simplify right side
    74,877.96x = 5,103,039,487.74
  5. Step 5: Solve for x
    x = 5,103,039,487.74/74,877.96
  6. Step 6: Final answer
    x = 68,151.42

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1.5x scale

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.