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Finding the Fourth Proportional to 58,276.76, 87,402.48 and 20,839.44

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Solution

The fourth proportional to 58,276.76, 87,402.48 and 20,839.44 is: 31,254.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,276.76 : 87,402.48 = 20,839.44 : x
  2. Step 2: Convert to fraction form
    58,276.76/87,402.48 = 20,839.44/x
  3. Step 3: Cross multiply
    58,276.76x = 87,402.48 × 20,839.44
  4. Step 4: Simplify right side
    58,276.76x = 1,821,418,737.81
  5. Step 5: Solve for x
    x = 1,821,418,737.81/58,276.76
  6. Step 6: Final answer
    x = 31,254.63

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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.