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Finding the Fourth Proportional to 58,043.78, 87,063.15 and 18,602.90

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Solution

The fourth proportional to 58,043.78, 87,063.15 and 18,602.90 is: 27,903.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,043.78 : 87,063.15 = 18,602.90 : x
  2. Step 2: Convert to fraction form
    58,043.78/87,063.15 = 18,602.90/x
  3. Step 3: Cross multiply
    58,043.78x = 87,063.15 × 18,602.90
  4. Step 4: Simplify right side
    58,043.78x = 1,619,627,073.14
  5. Step 5: Solve for x
    x = 1,619,627,073.14/58,043.78
  6. Step 6: Final answer
    x = 27,903.54

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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.