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Finding the Fourth Proportional to 86,718.99, 119,691.50 and 52,720.27

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Solution

The fourth proportional to 86,718.99, 119,691.50 and 52,720.27 is: 72,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,718.99 : 119,691.50 = 52,720.27 : x
  2. Step 2: Convert to fraction form
    86,718.99/119,691.50 = 52,720.27/x
  3. Step 3: Cross multiply
    86,718.99x = 119,691.50 × 52,720.27
  4. Step 4: Simplify right side
    86,718.99x = 6,310,168,196.71
  5. Step 5: Solve for x
    x = 6,310,168,196.71/86,718.99
  6. Step 6: Final answer
    x = 72,765.70

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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.