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Finding the Fourth Proportional to 207,694.59, 286,714.22 and 121,641.63

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Solution

The fourth proportional to 207,694.59, 286,714.22 and 121,641.63 is: 167,921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,694.59 : 286,714.22 = 121,641.63 : x
  2. Step 2: Convert to fraction form
    207,694.59/286,714.22 = 121,641.63/x
  3. Step 3: Cross multiply
    207,694.59x = 286,714.22 × 121,641.63
  4. Step 4: Simplify right side
    207,694.59x = 34,876,384,456.77
  5. Step 5: Solve for x
    x = 34,876,384,456.77/207,694.59
  6. Step 6: Final answer
    x = 167,921.49

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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.