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Finding the Fourth Proportional to 84,083.14, 115,914.18 and 66,147.01

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Solution

The fourth proportional to 84,083.14, 115,914.18 and 66,147.01 is: 91,188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,083.14 : 115,914.18 = 66,147.01 : x
  2. Step 2: Convert to fraction form
    84,083.14/115,914.18 = 66,147.01/x
  3. Step 3: Cross multiply
    84,083.14x = 115,914.18 × 66,147.01
  4. Step 4: Simplify right side
    84,083.14x = 7,667,376,423.60
  5. Step 5: Solve for x
    x = 7,667,376,423.60/84,083.14
  6. Step 6: Final answer
    x = 91,188.04

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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.