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Finding the Fourth Proportional to 4,272.20, 5,966.50 and 4,272.20

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Solution

The fourth proportional to 4,272.20, 5,966.50 and 4,272.20 is: 5,966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.20 : 5,966.50 = 4,272.20 : x
  2. Step 2: Convert to fraction form
    4,272.20/5,966.50 = 4,272.20/x
  3. Step 3: Cross multiply
    4,272.20x = 5,966.50 × 4,272.20
  4. Step 4: Simplify right side
    4,272.20x = 25,490,081.30
  5. Step 5: Solve for x
    x = 25,490,081.30/4,272.20
  6. Step 6: Final answer
    x = 5,966.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.