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Finding the Fourth Proportional to 86,137.56, 118,836.09 and 63,530.82

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Solution

The fourth proportional to 86,137.56, 118,836.09 and 63,530.82 is: 87,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.56 : 118,836.09 = 63,530.82 : x
  2. Step 2: Convert to fraction form
    86,137.56/118,836.09 = 63,530.82/x
  3. Step 3: Cross multiply
    86,137.56x = 118,836.09 × 63,530.82
  4. Step 4: Simplify right side
    86,137.56x = 7,549,754,243.29
  5. Step 5: Solve for x
    x = 7,549,754,243.29/86,137.56
  6. Step 6: Final answer
    x = 87,647.64

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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.