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Finding the Fourth Proportional to 194,432.20, 291,648.30 and 105,728.20

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Solution

The fourth proportional to 194,432.20, 291,648.30 and 105,728.20 is: 158,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,432.20 : 291,648.30 = 105,728.20 : x
  2. Step 2: Convert to fraction form
    194,432.20/291,648.30 = 105,728.20/x
  3. Step 3: Cross multiply
    194,432.20x = 291,648.30 × 105,728.20
  4. Step 4: Simplify right side
    194,432.20x = 30,835,449,792.06
  5. Step 5: Solve for x
    x = 30,835,449,792.06/194,432.20
  6. Step 6: Final answer
    x = 158,592.30

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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.