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Finding the Fourth Proportional to 210,667.90, 315,954.77 and 60,874.81

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Solution

The fourth proportional to 210,667.90, 315,954.77 and 60,874.81 is: 91,298.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,667.90 : 315,954.77 = 60,874.81 : x
  2. Step 2: Convert to fraction form
    210,667.90/315,954.77 = 60,874.81/x
  3. Step 3: Cross multiply
    210,667.90x = 315,954.77 × 60,874.81
  4. Step 4: Simplify right side
    210,667.90x = 19,233,686,592.34
  5. Step 5: Solve for x
    x = 19,233,686,592.34/210,667.90
  6. Step 6: Final answer
    x = 91,298.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.