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Finding the Fourth Proportional to 67,026.20, 100,552.80 and 19,641.20

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Solution

The fourth proportional to 67,026.20, 100,552.80 and 19,641.20 is: 29,465.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,026.20 : 100,552.80 = 19,641.20 : x
  2. Step 2: Convert to fraction form
    67,026.20/100,552.80 = 19,641.20/x
  3. Step 3: Cross multiply
    67,026.20x = 100,552.80 × 19,641.20
  4. Step 4: Simplify right side
    67,026.20x = 1,974,977,655.36
  5. Step 5: Solve for x
    x = 1,974,977,655.36/67,026.20
  6. Step 6: Final answer
    x = 29,465.76

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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.