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Finding the Fourth Proportional to 75,371.92, 103,983.64 and 45,158.51

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Solution

The fourth proportional to 75,371.92, 103,983.64 and 45,158.51 is: 62,301.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,371.92 : 103,983.64 = 45,158.51 : x
  2. Step 2: Convert to fraction form
    75,371.92/103,983.64 = 45,158.51/x
  3. Step 3: Cross multiply
    75,371.92x = 103,983.64 × 45,158.51
  4. Step 4: Simplify right side
    75,371.92x = 4,695,746,246.78
  5. Step 5: Solve for x
    x = 4,695,746,246.78/75,371.92
  6. Step 6: Final answer
    x = 62,301.00

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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.