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Finding the Fourth Proportional to 58,072.20, 86,978.70 and 44,820.60

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Solution

The fourth proportional to 58,072.20, 86,978.70 and 44,820.60 is: 67,130.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,072.20 : 86,978.70 = 44,820.60 : x
  2. Step 2: Convert to fraction form
    58,072.20/86,978.70 = 44,820.60/x
  3. Step 3: Cross multiply
    58,072.20x = 86,978.70 × 44,820.60
  4. Step 4: Simplify right side
    58,072.20x = 3,898,437,521.22
  5. Step 5: Solve for x
    x = 3,898,437,521.22/58,072.20
  6. Step 6: Final answer
    x = 67,130.87

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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.