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Finding the Fourth Proportional to 7,146.84, 9,860.36 and 4,002.42

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Solution

The fourth proportional to 7,146.84, 9,860.36 and 4,002.42 is: 5,522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.84 : 9,860.36 = 4,002.42 : x
  2. Step 2: Convert to fraction form
    7,146.84/9,860.36 = 4,002.42/x
  3. Step 3: Cross multiply
    7,146.84x = 9,860.36 × 4,002.42
  4. Step 4: Simplify right side
    7,146.84x = 39,465,282.06
  5. Step 5: Solve for x
    x = 39,465,282.06/7,146.84
  6. Step 6: Final answer
    x = 5,522.06

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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.