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Finding the Fourth Proportional to 628,061.78, 866,729.36 and 341,583.95

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Solution

The fourth proportional to 628,061.78, 866,729.36 and 341,583.95 is: 471,388.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,061.78 : 866,729.36 = 341,583.95 : x
  2. Step 2: Convert to fraction form
    628,061.78/866,729.36 = 341,583.95/x
  3. Step 3: Cross multiply
    628,061.78x = 866,729.36 × 341,583.95
  4. Step 4: Simplify right side
    628,061.78x = 296,060,841,390.56
  5. Step 5: Solve for x
    x = 296,060,841,390.56/628,061.78
  6. Step 6: Final answer
    x = 471,388.09

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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.