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Finding the Fourth Proportional to 66,112.20, 99,182.88 and 21,737.16

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Solution

The fourth proportional to 66,112.20, 99,182.88 and 21,737.16 is: 32,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112.20 : 99,182.88 = 21,737.16 : x
  2. Step 2: Convert to fraction form
    66,112.20/99,182.88 = 21,737.16/x
  3. Step 3: Cross multiply
    66,112.20x = 99,182.88 × 21,737.16
  4. Step 4: Simplify right side
    66,112.20x = 2,155,954,131.82
  5. Step 5: Solve for x
    x = 2,155,954,131.82/66,112.20
  6. Step 6: Final answer
    x = 32,610.53

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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.