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Finding the Fourth Proportional to 316,785.06, 437,161.13 and 171,587.57

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Solution

The fourth proportional to 316,785.06, 437,161.13 and 171,587.57 is: 236,789.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,785.06 : 437,161.13 = 171,587.57 : x
  2. Step 2: Convert to fraction form
    316,785.06/437,161.13 = 171,587.57/x
  3. Step 3: Cross multiply
    316,785.06x = 437,161.13 × 171,587.57
  4. Step 4: Simplify right side
    316,785.06x = 75,011,412,951.41
  5. Step 5: Solve for x
    x = 75,011,412,951.41/316,785.06
  6. Step 6: Final answer
    x = 236,789.62

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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.