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Finding the Fourth Proportional to 74,924.50, 103,397.82 and 40,934.42

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Solution

The fourth proportional to 74,924.50, 103,397.82 and 40,934.42 is: 56,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,924.50 : 103,397.82 = 40,934.42 : x
  2. Step 2: Convert to fraction form
    74,924.50/103,397.82 = 40,934.42/x
  3. Step 3: Cross multiply
    74,924.50x = 103,397.82 × 40,934.42
  4. Step 4: Simplify right side
    74,924.50x = 4,232,529,790.96
  5. Step 5: Solve for x
    x = 4,232,529,790.96/74,924.50
  6. Step 6: Final answer
    x = 56,490.60

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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.