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Finding the Fourth Proportional to 255,215.50, 352,217.73 and 147,787.42

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Solution

The fourth proportional to 255,215.50, 352,217.73 and 147,787.42 is: 203,958.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,215.50 : 352,217.73 = 147,787.42 : x
  2. Step 2: Convert to fraction form
    255,215.50/352,217.73 = 147,787.42/x
  3. Step 3: Cross multiply
    255,215.50x = 352,217.73 × 147,787.42
  4. Step 4: Simplify right side
    255,215.50x = 52,053,349,594.96
  5. Step 5: Solve for x
    x = 52,053,349,594.96/255,215.50
  6. Step 6: Final answer
    x = 203,958.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.