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Finding the Fourth Proportional to 236,747.80, 355,121.70 and 148,274.20

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Solution

The fourth proportional to 236,747.80, 355,121.70 and 148,274.20 is: 222,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,747.80 : 355,121.70 = 148,274.20 : x
  2. Step 2: Convert to fraction form
    236,747.80/355,121.70 = 148,274.20/x
  3. Step 3: Cross multiply
    236,747.80x = 355,121.70 × 148,274.20
  4. Step 4: Simplify right side
    236,747.80x = 52,655,385,970.14
  5. Step 5: Solve for x
    x = 52,655,385,970.14/236,747.80
  6. Step 6: Final answer
    x = 222,411.30

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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.