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Finding the Fourth Proportional to 86,620, 119,535.66 and 46,876

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Solution

The fourth proportional to 86,620, 119,535.66 and 46,876 is: 64,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620 : 119,535.66 = 46,876 : x
  2. Step 2: Convert to fraction form
    86,620/119,535.66 = 46,876/x
  3. Step 3: Cross multiply
    86,620x = 119,535.66 × 46,876
  4. Step 4: Simplify right side
    86,620x = 5,603,353,598.16
  5. Step 5: Solve for x
    x = 5,603,353,598.16/86,620
  6. Step 6: Final answer
    x = 64,688.91

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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.