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Finding the Fourth Proportional to 92,899.84, 128,202.72 and 50,459.20

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Solution

The fourth proportional to 92,899.84, 128,202.72 and 50,459.20 is: 69,634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,899.84 : 128,202.72 = 50,459.20 : x
  2. Step 2: Convert to fraction form
    92,899.84/128,202.72 = 50,459.20/x
  3. Step 3: Cross multiply
    92,899.84x = 128,202.72 × 50,459.20
  4. Step 4: Simplify right side
    92,899.84x = 6,469,006,689.02
  5. Step 5: Solve for x
    x = 6,469,006,689.02/92,899.84
  6. Step 6: Final answer
    x = 69,634.21

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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.