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Finding the Fourth Proportional to 220,869.80, 331,347.90 and 94,509.80

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Solution

The fourth proportional to 220,869.80, 331,347.90 and 94,509.80 is: 141,783.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,869.80 : 331,347.90 = 94,509.80 : x
  2. Step 2: Convert to fraction form
    220,869.80/331,347.90 = 94,509.80/x
  3. Step 3: Cross multiply
    220,869.80x = 331,347.90 × 94,509.80
  4. Step 4: Simplify right side
    220,869.80x = 31,315,623,759.42
  5. Step 5: Solve for x
    x = 31,315,623,759.42/220,869.80
  6. Step 6: Final answer
    x = 141,783.19

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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.