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Finding the Fourth Proportional to 58,618.20, 80,929.80 and 45,163.92

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Solution

The fourth proportional to 58,618.20, 80,929.80 and 45,163.92 is: 62,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,618.20 : 80,929.80 = 45,163.92 : x
  2. Step 2: Convert to fraction form
    58,618.20/80,929.80 = 45,163.92/x
  3. Step 3: Cross multiply
    58,618.20x = 80,929.80 × 45,163.92
  4. Step 4: Simplify right side
    58,618.20x = 3,655,107,012.82
  5. Step 5: Solve for x
    x = 3,655,107,012.82/58,618.20
  6. Step 6: Final answer
    x = 62,354.47

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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.