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Finding the Fourth Proportional to 8,480.61, 11,707.07 and 7,341.75

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Solution

The fourth proportional to 8,480.61, 11,707.07 and 7,341.75 is: 10,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.61 : 11,707.07 = 7,341.75 : x
  2. Step 2: Convert to fraction form
    8,480.61/11,707.07 = 7,341.75/x
  3. Step 3: Cross multiply
    8,480.61x = 11,707.07 × 7,341.75
  4. Step 4: Simplify right side
    8,480.61x = 85,950,344.46
  5. Step 5: Solve for x
    x = 85,950,344.46/8,480.61
  6. Step 6: Final answer
    x = 10,134.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.