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Finding the Fourth Proportional to 86,605.75, 119,516.30 and 46,861.75

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Solution

The fourth proportional to 86,605.75, 119,516.30 and 46,861.75 is: 64,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,605.75 : 119,516.30 = 46,861.75 : x
  2. Step 2: Convert to fraction form
    86,605.75/119,516.30 = 46,861.75/x
  3. Step 3: Cross multiply
    86,605.75x = 119,516.30 × 46,861.75
  4. Step 4: Simplify right side
    86,605.75x = 5,600,742,971.53
  5. Step 5: Solve for x
    x = 5,600,742,971.53/86,605.75
  6. Step 6: Final answer
    x = 64,669.41

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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.