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Finding the Fourth Proportional to 157,683.30, 217,593.70 and 86,048.92

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Solution

The fourth proportional to 157,683.30, 217,593.70 and 86,048.92 is: 118,742.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,683.30 : 217,593.70 = 86,048.92 : x
  2. Step 2: Convert to fraction form
    157,683.30/217,593.70 = 86,048.92/x
  3. Step 3: Cross multiply
    157,683.30x = 217,593.70 × 86,048.92
  4. Step 4: Simplify right side
    157,683.30x = 18,723,702,883.80
  5. Step 5: Solve for x
    x = 18,723,702,883.80/157,683.30
  6. Step 6: Final answer
    x = 118,742.46

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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.