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Finding the Fourth Proportional to 10,469.27, 15,703.92 and 4,918.55

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Solution

The fourth proportional to 10,469.27, 15,703.92 and 4,918.55 is: 7,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,469.27 : 15,703.92 = 4,918.55 : x
  2. Step 2: Convert to fraction form
    10,469.27/15,703.92 = 4,918.55/x
  3. Step 3: Cross multiply
    10,469.27x = 15,703.92 × 4,918.55
  4. Step 4: Simplify right side
    10,469.27x = 77,240,437.20
  5. Step 5: Solve for x
    x = 77,240,437.20/10,469.27
  6. Step 6: Final answer
    x = 7,377.82

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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.