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Finding the Fourth Proportional to 66,617.44, 99,926.16 and 19,903.12

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Solution

The fourth proportional to 66,617.44, 99,926.16 and 19,903.12 is: 29,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.44 : 99,926.16 = 19,903.12 : x
  2. Step 2: Convert to fraction form
    66,617.44/99,926.16 = 19,903.12/x
  3. Step 3: Cross multiply
    66,617.44x = 99,926.16 × 19,903.12
  4. Step 4: Simplify right side
    66,617.44x = 1,988,842,353.62
  5. Step 5: Solve for x
    x = 1,988,842,353.62/66,617.44
  6. Step 6: Final answer
    x = 29,854.68

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Similar ratio
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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.