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Finding the Fourth Proportional to 73,155.84, 100,961.28 and 61,198.08

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Solution

The fourth proportional to 73,155.84, 100,961.28 and 61,198.08 is: 84,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,155.84 : 100,961.28 = 61,198.08 : x
  2. Step 2: Convert to fraction form
    73,155.84/100,961.28 = 61,198.08/x
  3. Step 3: Cross multiply
    73,155.84x = 100,961.28 × 61,198.08
  4. Step 4: Simplify right side
    73,155.84x = 6,178,636,490.34
  5. Step 5: Solve for x
    x = 6,178,636,490.34/73,155.84
  6. Step 6: Final answer
    x = 84,458.55

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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.