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Finding the Fourth Proportional to 221,698.40, 332,547.60 and 132,906.20

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Solution

The fourth proportional to 221,698.40, 332,547.60 and 132,906.20 is: 199,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,698.40 : 332,547.60 = 132,906.20 : x
  2. Step 2: Convert to fraction form
    221,698.40/332,547.60 = 132,906.20/x
  3. Step 3: Cross multiply
    221,698.40x = 332,547.60 × 132,906.20
  4. Step 4: Simplify right side
    221,698.40x = 44,197,637,835.12
  5. Step 5: Solve for x
    x = 44,197,637,835.12/221,698.40
  6. Step 6: Final answer
    x = 199,359.30

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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.