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Finding the Fourth Proportional to 432,853.70, 649,280.55 and 196,657.70

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Solution

The fourth proportional to 432,853.70, 649,280.55 and 196,657.70 is: 294,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,853.70 : 649,280.55 = 196,657.70 : x
  2. Step 2: Convert to fraction form
    432,853.70/649,280.55 = 196,657.70/x
  3. Step 3: Cross multiply
    432,853.70x = 649,280.55 × 196,657.70
  4. Step 4: Simplify right side
    432,853.70x = 127,686,019,617.74
  5. Step 5: Solve for x
    x = 127,686,019,617.74/432,853.70
  6. Step 6: Final answer
    x = 294,986.55

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Similar ratio
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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.