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Finding the Fourth Proportional to 172,865.32, 238,489.86 and 116,186.92

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Solution

The fourth proportional to 172,865.32, 238,489.86 and 116,186.92 is: 160,294.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,865.32 : 238,489.86 = 116,186.92 : x
  2. Step 2: Convert to fraction form
    172,865.32/238,489.86 = 116,186.92/x
  3. Step 3: Cross multiply
    172,865.32x = 238,489.86 × 116,186.92
  4. Step 4: Simplify right side
    172,865.32x = 27,709,402,284.63
  5. Step 5: Solve for x
    x = 27,709,402,284.63/172,865.32
  6. Step 6: Final answer
    x = 160,294.74

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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.