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Finding the Fourth Proportional to 511,673.52, 767,512.20 and 156,686.16

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Solution

The fourth proportional to 511,673.52, 767,512.20 and 156,686.16 is: 235,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,673.52 : 767,512.20 = 156,686.16 : x
  2. Step 2: Convert to fraction form
    511,673.52/767,512.20 = 156,686.16/x
  3. Step 3: Cross multiply
    511,673.52x = 767,512.20 × 156,686.16
  4. Step 4: Simplify right side
    511,673.52x = 120,258,539,371.15
  5. Step 5: Solve for x
    x = 120,258,539,371.15/511,673.52
  6. Step 6: Final answer
    x = 235,029.83

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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.