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Finding the Fourth Proportional to 157,647.92, 217,558.71 and 86,032.54

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Solution

The fourth proportional to 157,647.92, 217,558.71 and 86,032.54 is: 118,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,647.92 : 217,558.71 = 86,032.54 : x
  2. Step 2: Convert to fraction form
    157,647.92/217,558.71 = 86,032.54/x
  3. Step 3: Cross multiply
    157,647.92x = 217,558.71 × 86,032.54
  4. Step 4: Simplify right side
    157,647.92x = 18,717,128,692.37
  5. Step 5: Solve for x
    x = 18,717,128,692.37/157,647.92
  6. Step 6: Final answer
    x = 118,727.41

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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.