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Finding the Fourth Proportional to 113,532, 156,674.16 and 63,231

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Solution

The fourth proportional to 113,532, 156,674.16 and 63,231 is: 87,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,532 : 156,674.16 = 63,231 : x
  2. Step 2: Convert to fraction form
    113,532/156,674.16 = 63,231/x
  3. Step 3: Cross multiply
    113,532x = 156,674.16 × 63,231
  4. Step 4: Simplify right side
    113,532x = 9,906,663,810.96
  5. Step 5: Solve for x
    x = 9,906,663,810.96/113,532
  6. Step 6: Final answer
    x = 87,258.78

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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.