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Finding the Fourth Proportional to 628,019.66, 866,658.90 and 341,533.64

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Solution

The fourth proportional to 628,019.66, 866,658.90 and 341,533.64 is: 471,311.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,019.66 : 866,658.90 = 341,533.64 : x
  2. Step 2: Convert to fraction form
    628,019.66/866,658.90 = 341,533.64/x
  3. Step 3: Cross multiply
    628,019.66x = 866,658.90 × 341,533.64
  4. Step 4: Simplify right side
    628,019.66x = 295,993,168,755.40
  5. Step 5: Solve for x
    x = 295,993,168,755.40/628,019.66
  6. Step 6: Final answer
    x = 471,311.95

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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.