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Finding the Fourth Proportional to 349,871.20, 524,871.60 and 113,221.60

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Solution

The fourth proportional to 349,871.20, 524,871.60 and 113,221.60 is: 169,853.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,871.20 : 524,871.60 = 113,221.60 : x
  2. Step 2: Convert to fraction form
    349,871.20/524,871.60 = 113,221.60/x
  3. Step 3: Cross multiply
    349,871.20x = 524,871.60 × 113,221.60
  4. Step 4: Simplify right side
    349,871.20x = 59,426,802,346.56
  5. Step 5: Solve for x
    x = 59,426,802,346.56/349,871.20
  6. Step 6: Final answer
    x = 169,853.37

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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.