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Finding the Fourth Proportional to 85,404.13, 117,858.86 and 47,166.25

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Solution

The fourth proportional to 85,404.13, 117,858.86 and 47,166.25 is: 65,090.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,404.13 : 117,858.86 = 47,166.25 : x
  2. Step 2: Convert to fraction form
    85,404.13/117,858.86 = 47,166.25/x
  3. Step 3: Cross multiply
    85,404.13x = 117,858.86 × 47,166.25
  4. Step 4: Simplify right side
    85,404.13x = 5,558,960,455.48
  5. Step 5: Solve for x
    x = 5,558,960,455.48/85,404.13
  6. Step 6: Final answer
    x = 65,090.07

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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.