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Finding the Fourth Proportional to 66,191.77, 99,231.86 and 28,723.63

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Solution

The fourth proportional to 66,191.77, 99,231.86 and 28,723.63 is: 43,061.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,191.77 : 99,231.86 = 28,723.63 : x
  2. Step 2: Convert to fraction form
    66,191.77/99,231.86 = 28,723.63/x
  3. Step 3: Cross multiply
    66,191.77x = 99,231.86 × 28,723.63
  4. Step 4: Simplify right side
    66,191.77x = 2,850,298,877.55
  5. Step 5: Solve for x
    x = 2,850,298,877.55/66,191.77
  6. Step 6: Final answer
    x = 43,061.23

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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.