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Finding the Fourth Proportional to 513,344.70, 770,126.94 and 153,543.78

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Solution

The fourth proportional to 513,344.70, 770,126.94 and 153,543.78 is: 230,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,344.70 : 770,126.94 = 153,543.78 : x
  2. Step 2: Convert to fraction form
    513,344.70/770,126.94 = 153,543.78/x
  3. Step 3: Cross multiply
    513,344.70x = 770,126.94 × 153,543.78
  4. Step 4: Simplify right side
    513,344.70x = 118,248,201,447.43
  5. Step 5: Solve for x
    x = 118,248,201,447.43/513,344.70
  6. Step 6: Final answer
    x = 230,348.54

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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.