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Finding the Fourth Proportional to 58,648.66, 87,979.15 and 19,208.85

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Solution

The fourth proportional to 58,648.66, 87,979.15 and 19,208.85 is: 28,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,648.66 : 87,979.15 = 19,208.85 : x
  2. Step 2: Convert to fraction form
    58,648.66/87,979.15 = 19,208.85/x
  3. Step 3: Cross multiply
    58,648.66x = 87,979.15 × 19,208.85
  4. Step 4: Simplify right side
    58,648.66x = 1,689,978,376.40
  5. Step 5: Solve for x
    x = 1,689,978,376.40/58,648.66
  6. Step 6: Final answer
    x = 28,815.29

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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.