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Finding the Fourth Proportional to 7,159.74, 10,659.43 and 7,125.11

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Solution

The fourth proportional to 7,159.74, 10,659.43 and 7,125.11 is: 10,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.74 : 10,659.43 = 7,125.11 : x
  2. Step 2: Convert to fraction form
    7,159.74/10,659.43 = 7,125.11/x
  3. Step 3: Cross multiply
    7,159.74x = 10,659.43 × 7,125.11
  4. Step 4: Simplify right side
    7,159.74x = 75,949,611.29
  5. Step 5: Solve for x
    x = 75,949,611.29/7,159.74
  6. Step 6: Final answer
    x = 10,607.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.