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Finding the Fourth Proportional to 107,713.30, 161,569.95 and 68,314.90

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Solution

The fourth proportional to 107,713.30, 161,569.95 and 68,314.90 is: 102,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,713.30 : 161,569.95 = 68,314.90 : x
  2. Step 2: Convert to fraction form
    107,713.30/161,569.95 = 68,314.90/x
  3. Step 3: Cross multiply
    107,713.30x = 161,569.95 × 68,314.90
  4. Step 4: Simplify right side
    107,713.30x = 11,037,634,977.26
  5. Step 5: Solve for x
    x = 11,037,634,977.26/107,713.30
  6. Step 6: Final answer
    x = 102,472.35

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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.