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Finding the Fourth Proportional to 9,079.10, 12,723.70 and 9,079.10

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Solution

The fourth proportional to 9,079.10, 12,723.70 and 9,079.10 is: 12,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.10 : 12,723.70 = 9,079.10 : x
  2. Step 2: Convert to fraction form
    9,079.10/12,723.70 = 9,079.10/x
  3. Step 3: Cross multiply
    9,079.10x = 12,723.70 × 9,079.10
  4. Step 4: Simplify right side
    9,079.10x = 115,519,744.67
  5. Step 5: Solve for x
    x = 115,519,744.67/9,079.10
  6. Step 6: Final answer
    x = 12,723.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.