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Finding the Fourth Proportional to 147,763.20, 221,644.80 and 133,478.40

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Solution

The fourth proportional to 147,763.20, 221,644.80 and 133,478.40 is: 200,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,763.20 : 221,644.80 = 133,478.40 : x
  2. Step 2: Convert to fraction form
    147,763.20/221,644.80 = 133,478.40/x
  3. Step 3: Cross multiply
    147,763.20x = 221,644.80 × 133,478.40
  4. Step 4: Simplify right side
    147,763.20x = 29,584,793,272.32
  5. Step 5: Solve for x
    x = 29,584,793,272.32/147,763.20
  6. Step 6: Final answer
    x = 200,217.60

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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.