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Finding the Fourth Proportional to 86,906.91, 119,933.24 and 56,711.55

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Solution

The fourth proportional to 86,906.91, 119,933.24 and 56,711.55 is: 78,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,906.91 : 119,933.24 = 56,711.55 : x
  2. Step 2: Convert to fraction form
    86,906.91/119,933.24 = 56,711.55/x
  3. Step 3: Cross multiply
    86,906.91x = 119,933.24 × 56,711.55
  4. Step 4: Simplify right side
    86,906.91x = 6,801,599,653.36
  5. Step 5: Solve for x
    x = 6,801,599,653.36/86,906.91
  6. Step 6: Final answer
    x = 78,263.05

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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.