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Finding the Fourth Proportional to 86,679, 119,617.74 and 46,935

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Solution

The fourth proportional to 86,679, 119,617.74 and 46,935 is: 64,770.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,679 : 119,617.74 = 46,935 : x
  2. Step 2: Convert to fraction form
    86,679/119,617.74 = 46,935/x
  3. Step 3: Cross multiply
    86,679x = 119,617.74 × 46,935
  4. Step 4: Simplify right side
    86,679x = 5,614,258,626.90
  5. Step 5: Solve for x
    x = 5,614,258,626.90/86,679
  6. Step 6: Final answer
    x = 64,770.69

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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.