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Finding the Fourth Proportional to 105,307.92, 157,961.90 and 35,187.24

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Solution

The fourth proportional to 105,307.92, 157,961.90 and 35,187.24 is: 52,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,307.92 : 157,961.90 = 35,187.24 : x
  2. Step 2: Convert to fraction form
    105,307.92/157,961.90 = 35,187.24/x
  3. Step 3: Cross multiply
    105,307.92x = 157,961.90 × 35,187.24
  4. Step 4: Simplify right side
    105,307.92x = 5,558,243,286.16
  5. Step 5: Solve for x
    x = 5,558,243,286.16/105,307.92
  6. Step 6: Final answer
    x = 52,780.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.