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Finding the Fourth Proportional to 86,478.74, 119,350.74 and 50,667.98

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Solution

The fourth proportional to 86,478.74, 119,350.74 and 50,667.98 is: 69,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,478.74 : 119,350.74 = 50,667.98 : x
  2. Step 2: Convert to fraction form
    86,478.74/119,350.74 = 50,667.98/x
  3. Step 3: Cross multiply
    86,478.74x = 119,350.74 × 50,667.98
  4. Step 4: Simplify right side
    86,478.74x = 6,047,260,907.31
  5. Step 5: Solve for x
    x = 6,047,260,907.31/86,478.74
  6. Step 6: Final answer
    x = 69,927.72

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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.