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Finding the Fourth Proportional to 105,752.72, 158,578.88 and 61,393.20

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Solution

The fourth proportional to 105,752.72, 158,578.88 and 61,393.20 is: 92,060.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,752.72 : 158,578.88 = 61,393.20 : x
  2. Step 2: Convert to fraction form
    105,752.72/158,578.88 = 61,393.20/x
  3. Step 3: Cross multiply
    105,752.72x = 158,578.88 × 61,393.20
  4. Step 4: Simplify right side
    105,752.72x = 9,735,664,895.62
  5. Step 5: Solve for x
    x = 9,735,664,895.62/105,752.72
  6. Step 6: Final answer
    x = 92,060.66

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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.