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Finding the Fourth Proportional to 354,744.40, 532,116.60 and 168,120.40

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Solution

The fourth proportional to 354,744.40, 532,116.60 and 168,120.40 is: 252,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,744.40 : 532,116.60 = 168,120.40 : x
  2. Step 2: Convert to fraction form
    354,744.40/532,116.60 = 168,120.40/x
  3. Step 3: Cross multiply
    354,744.40x = 532,116.60 × 168,120.40
  4. Step 4: Simplify right side
    354,744.40x = 89,459,655,638.64
  5. Step 5: Solve for x
    x = 89,459,655,638.64/354,744.40
  6. Step 6: Final answer
    x = 252,180.60

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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.