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Finding the Fourth Proportional to 55,891, 77,124.90 and 32,917.18

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Solution

The fourth proportional to 55,891, 77,124.90 and 32,917.18 is: 45,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891 : 77,124.90 = 32,917.18 : x
  2. Step 2: Convert to fraction form
    55,891/77,124.90 = 32,917.18/x
  3. Step 3: Cross multiply
    55,891x = 77,124.90 × 32,917.18
  4. Step 4: Simplify right side
    55,891x = 2,538,734,215.78
  5. Step 5: Solve for x
    x = 2,538,734,215.78/55,891
  6. Step 6: Final answer
    x = 45,422.95

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1.5x scale

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.