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Finding the Fourth Proportional to 368,152.90, 551,964.17 and 143,323.83

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Solution

The fourth proportional to 368,152.90, 551,964.17 and 143,323.83 is: 214,882.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,152.90 : 551,964.17 = 143,323.83 : x
  2. Step 2: Convert to fraction form
    368,152.90/551,964.17 = 143,323.83/x
  3. Step 3: Cross multiply
    368,152.90x = 551,964.17 × 143,323.83
  4. Step 4: Simplify right side
    368,152.90x = 79,109,619,225.48
  5. Step 5: Solve for x
    x = 79,109,619,225.48/368,152.90
  6. Step 6: Final answer
    x = 214,882.51

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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.