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Finding the Fourth Proportional to 85,506.86, 117,998.61 and 47,781.11

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Solution

The fourth proportional to 85,506.86, 117,998.61 and 47,781.11 is: 65,937.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.86 : 117,998.61 = 47,781.11 : x
  2. Step 2: Convert to fraction form
    85,506.86/117,998.61 = 47,781.11/x
  3. Step 3: Cross multiply
    85,506.86x = 117,998.61 × 47,781.11
  4. Step 4: Simplify right side
    85,506.86x = 5,638,103,974.26
  5. Step 5: Solve for x
    x = 5,638,103,974.26/85,506.86
  6. Step 6: Final answer
    x = 65,937.45

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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.