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Finding the Fourth Proportional to 360,000.40, 539,568.60 and 247,680.40

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Solution

The fourth proportional to 360,000.40, 539,568.60 and 247,680.40 is: 371,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,000.40 : 539,568.60 = 247,680.40 : x
  2. Step 2: Convert to fraction form
    360,000.40/539,568.60 = 247,680.40/x
  3. Step 3: Cross multiply
    360,000.40x = 539,568.60 × 247,680.40
  4. Step 4: Simplify right side
    360,000.40x = 133,640,566,675.44
  5. Step 5: Solve for x
    x = 133,640,566,675.44/360,000.40
  6. Step 6: Final answer
    x = 371,223.38

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1.5x scale

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.