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Finding the Fourth Proportional to 432,810.45, 649,215.68 and 432,810.45

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Solution

The fourth proportional to 432,810.45, 649,215.68 and 432,810.45 is: 649,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,810.45 : 649,215.68 = 432,810.45 : x
  2. Step 2: Convert to fraction form
    432,810.45/649,215.68 = 432,810.45/x
  3. Step 3: Cross multiply
    432,810.45x = 649,215.68 × 432,810.45
  4. Step 4: Simplify right side
    432,810.45x = 280,987,328,443.80
  5. Step 5: Solve for x
    x = 280,987,328,443.80/432,810.45
  6. Step 6: Final answer
    x = 649,215.68

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Double scale
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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.