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Finding the Fourth Proportional to 92,922.30, 128,218.41 and 54,701.10

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Solution

The fourth proportional to 92,922.30, 128,218.41 and 54,701.10 is: 75,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,922.30 : 128,218.41 = 54,701.10 : x
  2. Step 2: Convert to fraction form
    92,922.30/128,218.41 = 54,701.10/x
  3. Step 3: Cross multiply
    92,922.30x = 128,218.41 × 54,701.10
  4. Step 4: Simplify right side
    92,922.30x = 7,013,688,067.25
  5. Step 5: Solve for x
    x = 7,013,688,067.25/92,922.30
  6. Step 6: Final answer
    x = 75,479.06

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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.