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Finding the Fourth Proportional to 75,753.81, 104,549.22 and 45,554.58

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Solution

The fourth proportional to 75,753.81, 104,549.22 and 45,554.58 is: 62,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,753.81 : 104,549.22 = 45,554.58 : x
  2. Step 2: Convert to fraction form
    75,753.81/104,549.22 = 45,554.58/x
  3. Step 3: Cross multiply
    75,753.81x = 104,549.22 × 45,554.58
  4. Step 4: Simplify right side
    75,753.81x = 4,762,695,806.43
  5. Step 5: Solve for x
    x = 4,762,695,806.43/75,753.81
  6. Step 6: Final answer
    x = 62,870.71

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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.