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Finding the Fourth Proportional to 207,908.88, 286,913.86 and 117,264.56

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Solution

The fourth proportional to 207,908.88, 286,913.86 and 117,264.56 is: 161,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,908.88 : 286,913.86 = 117,264.56 : x
  2. Step 2: Convert to fraction form
    207,908.88/286,913.86 = 117,264.56/x
  3. Step 3: Cross multiply
    207,908.88x = 286,913.86 × 117,264.56
  4. Step 4: Simplify right side
    207,908.88x = 33,644,827,601.86
  5. Step 5: Solve for x
    x = 33,644,827,601.86/207,908.88
  6. Step 6: Final answer
    x = 161,824.87

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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.