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Finding the Fourth Proportional to 157,810.59, 217,775.24 and 86,190.89

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Solution

The fourth proportional to 157,810.59, 217,775.24 and 86,190.89 is: 118,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,810.59 : 217,775.24 = 86,190.89 : x
  2. Step 2: Convert to fraction form
    157,810.59/217,775.24 = 86,190.89/x
  3. Step 3: Cross multiply
    157,810.59x = 217,775.24 × 86,190.89
  4. Step 4: Simplify right side
    157,810.59x = 18,770,241,755.56
  5. Step 5: Solve for x
    x = 18,770,241,755.56/157,810.59
  6. Step 6: Final answer
    x = 118,941.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.