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Finding the Fourth Proportional to 157,858.61, 217,833.44 and 86,223.42

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Solution

The fourth proportional to 157,858.61, 217,833.44 and 86,223.42 is: 118,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,858.61 : 217,833.44 = 86,223.42 : x
  2. Step 2: Convert to fraction form
    157,858.61/217,833.44 = 86,223.42/x
  3. Step 3: Cross multiply
    157,858.61x = 217,833.44 × 86,223.42
  4. Step 4: Simplify right side
    157,858.61x = 18,782,343,756.05
  5. Step 5: Solve for x
    x = 18,782,343,756.05/157,858.61
  6. Step 6: Final answer
    x = 118,982.07

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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.