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Finding the Fourth Proportional to 9,167.52, 12,684.51 and 7,991.04

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Solution

The fourth proportional to 9,167.52, 12,684.51 and 7,991.04 is: 11,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,167.52 : 12,684.51 = 7,991.04 : x
  2. Step 2: Convert to fraction form
    9,167.52/12,684.51 = 7,991.04/x
  3. Step 3: Cross multiply
    9,167.52x = 12,684.51 × 7,991.04
  4. Step 4: Simplify right side
    9,167.52x = 101,362,426.79
  5. Step 5: Solve for x
    x = 101,362,426.79/9,167.52
  6. Step 6: Final answer
    x = 11,056.69

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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.