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Finding the Fourth Proportional to 157,556.37, 217,430.36 and 85,936.38

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Solution

The fourth proportional to 157,556.37, 217,430.36 and 85,936.38 is: 118,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,556.37 : 217,430.36 = 85,936.38 : x
  2. Step 2: Convert to fraction form
    157,556.37/217,430.36 = 85,936.38/x
  3. Step 3: Cross multiply
    157,556.37x = 217,430.36 × 85,936.38
  4. Step 4: Simplify right side
    157,556.37x = 18,685,177,117.71
  5. Step 5: Solve for x
    x = 18,685,177,117.71/157,556.37
  6. Step 6: Final answer
    x = 118,593.60

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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.