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Finding the Fourth Proportional to 32,612.20, 48,918.30 and 20,948.20

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Solution

The fourth proportional to 32,612.20, 48,918.30 and 20,948.20 is: 31,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,612.20 : 48,918.30 = 20,948.20 : x
  2. Step 2: Convert to fraction form
    32,612.20/48,918.30 = 20,948.20/x
  3. Step 3: Cross multiply
    32,612.20x = 48,918.30 × 20,948.20
  4. Step 4: Simplify right side
    32,612.20x = 1,024,750,332.06
  5. Step 5: Solve for x
    x = 1,024,750,332.06/32,612.20
  6. Step 6: Final answer
    x = 31,422.30

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Similar ratio
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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.