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Finding the Fourth Proportional to 72,390.96, 108,588.60 and 27,402.48

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Solution

The fourth proportional to 72,390.96, 108,588.60 and 27,402.48 is: 41,104.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,390.96 : 108,588.60 = 27,402.48 : x
  2. Step 2: Convert to fraction form
    72,390.96/108,588.60 = 27,402.48/x
  3. Step 3: Cross multiply
    72,390.96x = 108,588.60 × 27,402.48
  4. Step 4: Simplify right side
    72,390.96x = 2,975,596,939.73
  5. Step 5: Solve for x
    x = 2,975,596,939.73/72,390.96
  6. Step 6: Final answer
    x = 41,104.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.