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Finding the Fourth Proportional to 148,867.20, 222,955.20 and 145,411.20

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Solution

The fourth proportional to 148,867.20, 222,955.20 and 145,411.20 is: 217,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,867.20 : 222,955.20 = 145,411.20 : x
  2. Step 2: Convert to fraction form
    148,867.20/222,955.20 = 145,411.20/x
  3. Step 3: Cross multiply
    148,867.20x = 222,955.20 × 145,411.20
  4. Step 4: Simplify right side
    148,867.20x = 32,420,183,178.24
  5. Step 5: Solve for x
    x = 32,420,183,178.24/148,867.20
  6. Step 6: Final answer
    x = 217,779.22

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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.