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Finding the Fourth Proportional to 172,873, 238,565.70 and 97,422.76

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Solution

The fourth proportional to 172,873, 238,565.70 and 97,422.76 is: 134,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,873 : 238,565.70 = 97,422.76 : x
  2. Step 2: Convert to fraction form
    172,873/238,565.70 = 97,422.76/x
  3. Step 3: Cross multiply
    172,873x = 238,565.70 × 97,422.76
  4. Step 4: Simplify right side
    172,873x = 23,241,728,935.33
  5. Step 5: Solve for x
    x = 23,241,728,935.33/172,873
  6. Step 6: Final answer
    x = 134,443.95

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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.