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Finding the Fourth Proportional to 66,353.50, 99,530.25 and 17,105.50

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Solution

The fourth proportional to 66,353.50, 99,530.25 and 17,105.50 is: 25,658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,353.50 : 99,530.25 = 17,105.50 : x
  2. Step 2: Convert to fraction form
    66,353.50/99,530.25 = 17,105.50/x
  3. Step 3: Cross multiply
    66,353.50x = 99,530.25 × 17,105.50
  4. Step 4: Simplify right side
    66,353.50x = 1,702,514,691.38
  5. Step 5: Solve for x
    x = 1,702,514,691.38/66,353.50
  6. Step 6: Final answer
    x = 25,658.25

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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.