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Finding the Fourth Proportional to 58,159.77, 87,247.82 and 28,578.77

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Solution

The fourth proportional to 58,159.77, 87,247.82 and 28,578.77 is: 42,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,159.77 : 87,247.82 = 28,578.77 : x
  2. Step 2: Convert to fraction form
    58,159.77/87,247.82 = 28,578.77/x
  3. Step 3: Cross multiply
    58,159.77x = 87,247.82 × 28,578.77
  4. Step 4: Simplify right side
    58,159.77x = 2,493,435,380.78
  5. Step 5: Solve for x
    x = 2,493,435,380.78/58,159.77
  6. Step 6: Final answer
    x = 42,872.17

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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.