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Finding the Fourth Proportional to 432,920.70, 649,381.05 and 432,920.70

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Solution

The fourth proportional to 432,920.70, 649,381.05 and 432,920.70 is: 649,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,920.70 : 649,381.05 = 432,920.70 : x
  2. Step 2: Convert to fraction form
    432,920.70/649,381.05 = 432,920.70/x
  3. Step 3: Cross multiply
    432,920.70x = 649,381.05 × 432,920.70
  4. Step 4: Simplify right side
    432,920.70x = 281,130,498,732.74
  5. Step 5: Solve for x
    x = 281,130,498,732.74/432,920.70
  6. Step 6: Final answer
    x = 649,381.05

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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.