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Finding the Fourth Proportional to 86,636.88, 119,565.84 and 68,878.44

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Solution

The fourth proportional to 86,636.88, 119,565.84 and 68,878.44 is: 95,057.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636.88 : 119,565.84 = 68,878.44 : x
  2. Step 2: Convert to fraction form
    86,636.88/119,565.84 = 68,878.44/x
  3. Step 3: Cross multiply
    86,636.88x = 119,565.84 × 68,878.44
  4. Step 4: Simplify right side
    86,636.88x = 8,235,508,536.49
  5. Step 5: Solve for x
    x = 8,235,508,536.49/86,636.88
  6. Step 6: Final answer
    x = 95,057.77

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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.