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Finding the Fourth Proportional to 9,908.61, 13,673.45 and 5,931.92

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Solution

The fourth proportional to 9,908.61, 13,673.45 and 5,931.92 is: 8,185.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.61 : 13,673.45 = 5,931.92 : x
  2. Step 2: Convert to fraction form
    9,908.61/13,673.45 = 5,931.92/x
  3. Step 3: Cross multiply
    9,908.61x = 13,673.45 × 5,931.92
  4. Step 4: Simplify right side
    9,908.61x = 81,109,757.99
  5. Step 5: Solve for x
    x = 81,109,757.99/9,908.61
  6. Step 6: Final answer
    x = 8,185.79

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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.