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Finding the Fourth Proportional to 115,871.80, 162,453.80 and 115,871.80

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Solution

The fourth proportional to 115,871.80, 162,453.80 and 115,871.80 is: 162,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,871.80 : 162,453.80 = 115,871.80 : x
  2. Step 2: Convert to fraction form
    115,871.80/162,453.80 = 115,871.80/x
  3. Step 3: Cross multiply
    115,871.80x = 162,453.80 × 115,871.80
  4. Step 4: Simplify right side
    115,871.80x = 18,823,814,222.84
  5. Step 5: Solve for x
    x = 18,823,814,222.84/115,871.80
  6. Step 6: Final answer
    x = 162,453.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.