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Finding the Fourth Proportional to 279,833.75, 386,060.74 and 172,216.94

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Solution

The fourth proportional to 279,833.75, 386,060.74 and 172,216.94 is: 237,591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,833.75 : 386,060.74 = 172,216.94 : x
  2. Step 2: Convert to fraction form
    279,833.75/386,060.74 = 172,216.94/x
  3. Step 3: Cross multiply
    279,833.75x = 386,060.74 × 172,216.94
  4. Step 4: Simplify right side
    279,833.75x = 66,486,199,831.55
  5. Step 5: Solve for x
    x = 66,486,199,831.55/279,833.75
  6. Step 6: Final answer
    x = 237,591.79

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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.