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Finding the Fourth Proportional to 92,620.84, 127,819.08 and 56,790.04

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Solution

The fourth proportional to 92,620.84, 127,819.08 and 56,790.04 is: 78,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,620.84 : 127,819.08 = 56,790.04 : x
  2. Step 2: Convert to fraction form
    92,620.84/127,819.08 = 56,790.04/x
  3. Step 3: Cross multiply
    92,620.84x = 127,819.08 × 56,790.04
  4. Step 4: Simplify right side
    92,620.84x = 7,258,850,665.96
  5. Step 5: Solve for x
    x = 7,258,850,665.96/92,620.84
  6. Step 6: Final answer
    x = 78,371.68

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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.