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Finding the Fourth Proportional to 88,236, 121,765.68 and 48,492

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Solution

The fourth proportional to 88,236, 121,765.68 and 48,492 is: 66,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,236 : 121,765.68 = 48,492 : x
  2. Step 2: Convert to fraction form
    88,236/121,765.68 = 48,492/x
  3. Step 3: Cross multiply
    88,236x = 121,765.68 × 48,492
  4. Step 4: Simplify right side
    88,236x = 5,904,661,354.56
  5. Step 5: Solve for x
    x = 5,904,661,354.56/88,236
  6. Step 6: Final answer
    x = 66,918.96

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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.