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Finding the Fourth Proportional to 58,282.95, 87,405.89 and 18,830.73

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Solution

The fourth proportional to 58,282.95, 87,405.89 and 18,830.73 is: 28,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,282.95 : 87,405.89 = 18,830.73 : x
  2. Step 2: Convert to fraction form
    58,282.95/87,405.89 = 18,830.73/x
  3. Step 3: Cross multiply
    58,282.95x = 87,405.89 × 18,830.73
  4. Step 4: Simplify right side
    58,282.95x = 1,645,916,620.85
  5. Step 5: Solve for x
    x = 1,645,916,620.85/58,282.95
  6. Step 6: Final answer
    x = 28,240.10

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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.