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Finding the Fourth Proportional to 512,010.39, 767,762.86 and 156,938.79

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Solution

The fourth proportional to 512,010.39, 767,762.86 and 156,938.79 is: 235,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,010.39 : 767,762.86 = 156,938.79 : x
  2. Step 2: Convert to fraction form
    512,010.39/767,762.86 = 156,938.79/x
  3. Step 3: Cross multiply
    512,010.39x = 767,762.86 × 156,938.79
  4. Step 4: Simplify right side
    512,010.39x = 120,491,770,983.88
  5. Step 5: Solve for x
    x = 120,491,770,983.88/512,010.39
  6. Step 6: Final answer
    x = 235,330.72

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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.