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Finding the Fourth Proportional to 86,617.74, 119,647.23 and 69,685.77

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Solution

The fourth proportional to 86,617.74, 119,647.23 and 69,685.77 is: 96,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,617.74 : 119,647.23 = 69,685.77 : x
  2. Step 2: Convert to fraction form
    86,617.74/119,647.23 = 69,685.77/x
  3. Step 3: Cross multiply
    86,617.74x = 119,647.23 × 69,685.77
  4. Step 4: Simplify right side
    86,617.74x = 8,337,709,350.92
  5. Step 5: Solve for x
    x = 8,337,709,350.92/86,617.74
  6. Step 6: Final answer
    x = 96,258.68

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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.