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Finding the Fourth Proportional to 101,781.33, 140,459.09 and 56,462.27

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Solution

The fourth proportional to 101,781.33, 140,459.09 and 56,462.27 is: 77,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,781.33 : 140,459.09 = 56,462.27 : x
  2. Step 2: Convert to fraction form
    101,781.33/140,459.09 = 56,462.27/x
  3. Step 3: Cross multiply
    101,781.33x = 140,459.09 × 56,462.27
  4. Step 4: Simplify right side
    101,781.33x = 7,930,638,078.93
  5. Step 5: Solve for x
    x = 7,930,638,078.93/101,781.33
  6. Step 6: Final answer
    x = 77,918.40

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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.