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Finding the Fourth Proportional to 11,472.72, 17,209.08 and 6,275.76

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Solution

The fourth proportional to 11,472.72, 17,209.08 and 6,275.76 is: 9,413.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472.72 : 17,209.08 = 6,275.76 : x
  2. Step 2: Convert to fraction form
    11,472.72/17,209.08 = 6,275.76/x
  3. Step 3: Cross multiply
    11,472.72x = 17,209.08 × 6,275.76
  4. Step 4: Simplify right side
    11,472.72x = 108,000,055.90
  5. Step 5: Solve for x
    x = 108,000,055.90/11,472.72
  6. Step 6: Final answer
    x = 9,413.64

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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.