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Finding the Fourth Proportional to 7,153.62, 9,867.90 and 4,169.13

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Solution

The fourth proportional to 7,153.62, 9,867.90 and 4,169.13 is: 5,751.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.62 : 9,867.90 = 4,169.13 : x
  2. Step 2: Convert to fraction form
    7,153.62/9,867.90 = 4,169.13/x
  3. Step 3: Cross multiply
    7,153.62x = 9,867.90 × 4,169.13
  4. Step 4: Simplify right side
    7,153.62x = 41,140,557.93
  5. Step 5: Solve for x
    x = 41,140,557.93/7,153.62
  6. Step 6: Final answer
    x = 5,751.01

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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.