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Finding the Fourth Proportional to 86,160.81, 118,868.13 and 63,554.13

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Solution

The fourth proportional to 86,160.81, 118,868.13 and 63,554.13 is: 87,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,160.81 : 118,868.13 = 63,554.13 : x
  2. Step 2: Convert to fraction form
    86,160.81/118,868.13 = 63,554.13/x
  3. Step 3: Cross multiply
    86,160.81x = 118,868.13 × 63,554.13
  4. Step 4: Simplify right side
    86,160.81x = 7,554,560,586.88
  5. Step 5: Solve for x
    x = 7,554,560,586.88/86,160.81
  6. Step 6: Final answer
    x = 87,679.78

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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.