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Finding the Fourth Proportional to 59,059.20, 88,591.20 and 19,620

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Solution

The fourth proportional to 59,059.20, 88,591.20 and 19,620 is: 29,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,059.20 : 88,591.20 = 19,620 : x
  2. Step 2: Convert to fraction form
    59,059.20/88,591.20 = 19,620/x
  3. Step 3: Cross multiply
    59,059.20x = 88,591.20 × 19,620
  4. Step 4: Simplify right side
    59,059.20x = 1,738,159,344
  5. Step 5: Solve for x
    x = 1,738,159,344/59,059.20
  6. Step 6: Final answer
    x = 29,430.80

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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.