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Finding the Fourth Proportional to 511,203.80, 766,659.90 and 156,132.20

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Solution

The fourth proportional to 511,203.80, 766,659.90 and 156,132.20 is: 234,153.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,203.80 : 766,659.90 = 156,132.20 : x
  2. Step 2: Convert to fraction form
    511,203.80/766,659.90 = 156,132.20/x
  3. Step 3: Cross multiply
    511,203.80x = 766,659.90 × 156,132.20
  4. Step 4: Simplify right side
    511,203.80x = 119,700,296,838.78
  5. Step 5: Solve for x
    x = 119,700,296,838.78/511,203.80
  6. Step 6: Final answer
    x = 234,153.77

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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.