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Finding the Fourth Proportional to 412,963.20, 619,291.20 and 163,593.60

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Solution

The fourth proportional to 412,963.20, 619,291.20 and 163,593.60 is: 245,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,963.20 : 619,291.20 = 163,593.60 : x
  2. Step 2: Convert to fraction form
    412,963.20/619,291.20 = 163,593.60/x
  3. Step 3: Cross multiply
    412,963.20x = 619,291.20 × 163,593.60
  4. Step 4: Simplify right side
    412,963.20x = 101,312,076,856.32
  5. Step 5: Solve for x
    x = 101,312,076,856.32/412,963.20
  6. Step 6: Final answer
    x = 245,329.55

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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.