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Finding the Fourth Proportional to 5,547.16, 7,655 and 3,189.80

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Solution

The fourth proportional to 5,547.16, 7,655 and 3,189.80 is: 4,401.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,547.16 : 7,655 = 3,189.80 : x
  2. Step 2: Convert to fraction form
    5,547.16/7,655 = 3,189.80/x
  3. Step 3: Cross multiply
    5,547.16x = 7,655 × 3,189.80
  4. Step 4: Simplify right side
    5,547.16x = 24,417,919
  5. Step 5: Solve for x
    x = 24,417,919/5,547.16
  6. Step 6: Final answer
    x = 4,401.88

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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.