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Finding the Fourth Proportional to 66,404.38, 99,626.07 and 19,658.47

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Solution

The fourth proportional to 66,404.38, 99,626.07 and 19,658.47 is: 29,493.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.38 : 99,626.07 = 19,658.47 : x
  2. Step 2: Convert to fraction form
    66,404.38/99,626.07 = 19,658.47/x
  3. Step 3: Cross multiply
    66,404.38x = 99,626.07 × 19,658.47
  4. Step 4: Simplify right side
    66,404.38x = 1,958,495,610.18
  5. Step 5: Solve for x
    x = 1,958,495,610.18/66,404.38
  6. Step 6: Final answer
    x = 29,493.47

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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.