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Finding the Fourth Proportional to 75,429.61, 113,191.13 and 43,854.53

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Solution

The fourth proportional to 75,429.61, 113,191.13 and 43,854.53 is: 65,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,429.61 : 113,191.13 = 43,854.53 : x
  2. Step 2: Convert to fraction form
    75,429.61/113,191.13 = 43,854.53/x
  3. Step 3: Cross multiply
    75,429.61x = 113,191.13 × 43,854.53
  4. Step 4: Simplify right side
    75,429.61x = 4,963,943,240.36
  5. Step 5: Solve for x
    x = 4,963,943,240.36/75,429.61
  6. Step 6: Final answer
    x = 65,808.95

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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.