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Finding the Fourth Proportional to 101,895.20, 152,842.80 and 28,023.20

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Solution

The fourth proportional to 101,895.20, 152,842.80 and 28,023.20 is: 42,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,895.20 : 152,842.80 = 28,023.20 : x
  2. Step 2: Convert to fraction form
    101,895.20/152,842.80 = 28,023.20/x
  3. Step 3: Cross multiply
    101,895.20x = 152,842.80 × 28,023.20
  4. Step 4: Simplify right side
    101,895.20x = 4,283,144,352.96
  5. Step 5: Solve for x
    x = 4,283,144,352.96/101,895.20
  6. Step 6: Final answer
    x = 42,034.80

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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.