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Finding the Fourth Proportional to 221,878.80, 332,818.20 and 127,400.40

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Solution

The fourth proportional to 221,878.80, 332,818.20 and 127,400.40 is: 191,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,878.80 : 332,818.20 = 127,400.40 : x
  2. Step 2: Convert to fraction form
    221,878.80/332,818.20 = 127,400.40/x
  3. Step 3: Cross multiply
    221,878.80x = 332,818.20 × 127,400.40
  4. Step 4: Simplify right side
    221,878.80x = 42,401,171,807.28
  5. Step 5: Solve for x
    x = 42,401,171,807.28/221,878.80
  6. Step 6: Final answer
    x = 191,100.60

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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.