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Finding the Fourth Proportional to 631,561.30, 871,940.73 and 411,008.74

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Solution

The fourth proportional to 631,561.30, 871,940.73 and 411,008.74 is: 567,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,561.30 : 871,940.73 = 411,008.74 : x
  2. Step 2: Convert to fraction form
    631,561.30/871,940.73 = 411,008.74/x
  3. Step 3: Cross multiply
    631,561.30x = 871,940.73 × 411,008.74
  4. Step 4: Simplify right side
    631,561.30x = 358,375,260,791.98
  5. Step 5: Solve for x
    x = 358,375,260,791.98/631,561.30
  6. Step 6: Final answer
    x = 567,443.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.