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Finding the Fourth Proportional to 647,105.20, 970,657.80 and 173,838.40

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Solution

The fourth proportional to 647,105.20, 970,657.80 and 173,838.40 is: 260,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,105.20 : 970,657.80 = 173,838.40 : x
  2. Step 2: Convert to fraction form
    647,105.20/970,657.80 = 173,838.40/x
  3. Step 3: Cross multiply
    647,105.20x = 970,657.80 × 173,838.40
  4. Step 4: Simplify right side
    647,105.20x = 168,737,598,899.52
  5. Step 5: Solve for x
    x = 168,737,598,899.52/647,105.20
  6. Step 6: Final answer
    x = 260,757.60

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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.