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Finding the Fourth Proportional to 58,094.70, 87,124.60 and 20,649.85

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Solution

The fourth proportional to 58,094.70, 87,124.60 and 20,649.85 is: 30,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,094.70 : 87,124.60 = 20,649.85 : x
  2. Step 2: Convert to fraction form
    58,094.70/87,124.60 = 20,649.85/x
  3. Step 3: Cross multiply
    58,094.70x = 87,124.60 × 20,649.85
  4. Step 4: Simplify right side
    58,094.70x = 1,799,109,921.31
  5. Step 5: Solve for x
    x = 1,799,109,921.31/58,094.70
  6. Step 6: Final answer
    x = 30,968.57

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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.