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Finding the Fourth Proportional to 626,515.19, 864,591.81 and 340,035.28

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Solution

The fourth proportional to 626,515.19, 864,591.81 and 340,035.28 is: 469,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,515.19 : 864,591.81 = 340,035.28 : x
  2. Step 2: Convert to fraction form
    626,515.19/864,591.81 = 340,035.28/x
  3. Step 3: Cross multiply
    626,515.19x = 864,591.81 × 340,035.28
  4. Step 4: Simplify right side
    626,515.19x = 293,991,713,876.10
  5. Step 5: Solve for x
    x = 293,991,713,876.10/626,515.19
  6. Step 6: Final answer
    x = 469,249.14

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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.