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Finding the Fourth Proportional to 42,608.61, 63,922.05 and 13,028.63

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Solution

The fourth proportional to 42,608.61, 63,922.05 and 13,028.63 is: 19,545.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,608.61 : 63,922.05 = 13,028.63 : x
  2. Step 2: Convert to fraction form
    42,608.61/63,922.05 = 13,028.63/x
  3. Step 3: Cross multiply
    42,608.61x = 63,922.05 × 13,028.63
  4. Step 4: Simplify right side
    42,608.61x = 832,816,418.68
  5. Step 5: Solve for x
    x = 832,816,418.68/42,608.61
  6. Step 6: Final answer
    x = 19,545.73

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1.5x scale

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.