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Finding the Fourth Proportional to 368,001.20, 551,807.40 and 157,401.20

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Solution

The fourth proportional to 368,001.20, 551,807.40 and 157,401.20 is: 236,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,001.20 : 551,807.40 = 157,401.20 : x
  2. Step 2: Convert to fraction form
    368,001.20/551,807.40 = 157,401.20/x
  3. Step 3: Cross multiply
    368,001.20x = 551,807.40 × 157,401.20
  4. Step 4: Simplify right side
    368,001.20x = 86,855,146,928.88
  5. Step 5: Solve for x
    x = 86,855,146,928.88/368,001.20
  6. Step 6: Final answer
    x = 236,018.65

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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.