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Finding the Fourth Proportional to 104,398.47, 144,131.76 and 68,650.13

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Solution

The fourth proportional to 104,398.47, 144,131.76 and 68,650.13 is: 94,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,398.47 : 144,131.76 = 68,650.13 : x
  2. Step 2: Convert to fraction form
    104,398.47/144,131.76 = 68,650.13/x
  3. Step 3: Cross multiply
    104,398.47x = 144,131.76 × 68,650.13
  4. Step 4: Simplify right side
    104,398.47x = 9,894,664,421.46
  5. Step 5: Solve for x
    x = 9,894,664,421.46/104,398.47
  6. Step 6: Final answer
    x = 94,777.87

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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.