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Finding the Fourth Proportional to 368,518.72, 551,892.24 and 210,267.40

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Solution

The fourth proportional to 368,518.72, 551,892.24 and 210,267.40 is: 314,895.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,518.72 : 551,892.24 = 210,267.40 : x
  2. Step 2: Convert to fraction form
    368,518.72/551,892.24 = 210,267.40/x
  3. Step 3: Cross multiply
    368,518.72x = 551,892.24 × 210,267.40
  4. Step 4: Simplify right side
    368,518.72x = 116,044,946,384.98
  5. Step 5: Solve for x
    x = 116,044,946,384.98/368,518.72
  6. Step 6: Final answer
    x = 314,895.66

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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.