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Finding the Fourth Proportional to 34,981.20, 52,471.80 and 30,607.20

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Solution

The fourth proportional to 34,981.20, 52,471.80 and 30,607.20 is: 45,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,981.20 : 52,471.80 = 30,607.20 : x
  2. Step 2: Convert to fraction form
    34,981.20/52,471.80 = 30,607.20/x
  3. Step 3: Cross multiply
    34,981.20x = 52,471.80 × 30,607.20
  4. Step 4: Simplify right side
    34,981.20x = 1,606,014,876.96
  5. Step 5: Solve for x
    x = 1,606,014,876.96/34,981.20
  6. Step 6: Final answer
    x = 45,910.80

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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.