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Finding the Fourth Proportional to 210,513.81, 315,822.96 and 60,750.48

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Solution

The fourth proportional to 210,513.81, 315,822.96 and 60,750.48 is: 91,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,513.81 : 315,822.96 = 60,750.48 : x
  2. Step 2: Convert to fraction form
    210,513.81/315,822.96 = 60,750.48/x
  3. Step 3: Cross multiply
    210,513.81x = 315,822.96 × 60,750.48
  4. Step 4: Simplify right side
    210,513.81x = 19,186,396,415.02
  5. Step 5: Solve for x
    x = 19,186,396,415.02/210,513.81
  6. Step 6: Final answer
    x = 91,140.80

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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.