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Finding the Fourth Proportional to 74,402.90, 111,487.68 and 63,263.78

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Solution

The fourth proportional to 74,402.90, 111,487.68 and 63,263.78 is: 94,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,402.90 : 111,487.68 = 63,263.78 : x
  2. Step 2: Convert to fraction form
    74,402.90/111,487.68 = 63,263.78/x
  3. Step 3: Cross multiply
    74,402.90x = 111,487.68 × 63,263.78
  4. Step 4: Simplify right side
    74,402.90x = 7,053,131,502.79
  5. Step 5: Solve for x
    x = 7,053,131,502.79/74,402.90
  6. Step 6: Final answer
    x = 94,796.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.