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Finding the Fourth Proportional to 80,871.40, 111,602.97 and 46,900.03

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Solution

The fourth proportional to 80,871.40, 111,602.97 and 46,900.03 is: 64,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.40 : 111,602.97 = 46,900.03 : x
  2. Step 2: Convert to fraction form
    80,871.40/111,602.97 = 46,900.03/x
  3. Step 3: Cross multiply
    80,871.40x = 111,602.97 × 46,900.03
  4. Step 4: Simplify right side
    80,871.40x = 5,234,182,641.09
  5. Step 5: Solve for x
    x = 5,234,182,641.09/80,871.40
  6. Step 6: Final answer
    x = 64,722.30

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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.