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Finding the Fourth Proportional to 4,482.60, 6,723.90 and 4,079.40

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Solution

The fourth proportional to 4,482.60, 6,723.90 and 4,079.40 is: 6,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,482.60 : 6,723.90 = 4,079.40 : x
  2. Step 2: Convert to fraction form
    4,482.60/6,723.90 = 4,079.40/x
  3. Step 3: Cross multiply
    4,482.60x = 6,723.90 × 4,079.40
  4. Step 4: Simplify right side
    4,482.60x = 27,429,477.66
  5. Step 5: Solve for x
    x = 27,429,477.66/4,482.60
  6. Step 6: Final answer
    x = 6,119.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.