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Finding the Fourth Proportional to 4,750.40, 7,109.40 and 4,167.20

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Solution

The fourth proportional to 4,750.40, 7,109.40 and 4,167.20 is: 6,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.40 : 7,109.40 = 4,167.20 : x
  2. Step 2: Convert to fraction form
    4,750.40/7,109.40 = 4,167.20/x
  3. Step 3: Cross multiply
    4,750.40x = 7,109.40 × 4,167.20
  4. Step 4: Simplify right side
    4,750.40x = 29,626,291.68
  5. Step 5: Solve for x
    x = 29,626,291.68/4,750.40
  6. Step 6: Final answer
    x = 6,236.59

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1.5x scale

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.