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Finding the Fourth Proportional to 228,864.78, 343,212.90 and 79,066.62

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Solution

The fourth proportional to 228,864.78, 343,212.90 and 79,066.62 is: 118,570.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,864.78 : 343,212.90 = 79,066.62 : x
  2. Step 2: Convert to fraction form
    228,864.78/343,212.90 = 79,066.62/x
  3. Step 3: Cross multiply
    228,864.78x = 343,212.90 × 79,066.62
  4. Step 4: Simplify right side
    228,864.78x = 27,136,683,943.40
  5. Step 5: Solve for x
    x = 27,136,683,943.40/228,864.78
  6. Step 6: Final answer
    x = 118,570.82

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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.