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Finding the Fourth Proportional to 7,154.12, 9,867.11 and 4,318.53

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Solution

The fourth proportional to 7,154.12, 9,867.11 and 4,318.53 is: 5,956.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,154.12 : 9,867.11 = 4,318.53 : x
  2. Step 2: Convert to fraction form
    7,154.12/9,867.11 = 4,318.53/x
  3. Step 3: Cross multiply
    7,154.12x = 9,867.11 × 4,318.53
  4. Step 4: Simplify right side
    7,154.12x = 42,611,388.96
  5. Step 5: Solve for x
    x = 42,611,388.96/7,154.12
  6. Step 6: Final answer
    x = 5,956.21

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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.