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Finding the Fourth Proportional to 66,937.83, 100,407.47 and 20,191.11

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Solution

The fourth proportional to 66,937.83, 100,407.47 and 20,191.11 is: 30,286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,937.83 : 100,407.47 = 20,191.11 : x
  2. Step 2: Convert to fraction form
    66,937.83/100,407.47 = 20,191.11/x
  3. Step 3: Cross multiply
    66,937.83x = 100,407.47 × 20,191.11
  4. Step 4: Simplify right side
    66,937.83x = 2,027,338,271.59
  5. Step 5: Solve for x
    x = 2,027,338,271.59/66,937.83
  6. Step 6: Final answer
    x = 30,286.88

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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.