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Finding the Fourth Proportional to 628,005.63, 866,639.61 and 341,519.57

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Solution

The fourth proportional to 628,005.63, 866,639.61 and 341,519.57 is: 471,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,005.63 : 866,639.61 = 341,519.57 : x
  2. Step 2: Convert to fraction form
    628,005.63/866,639.61 = 341,519.57/x
  3. Step 3: Cross multiply
    628,005.63x = 866,639.61 × 341,519.57
  4. Step 4: Simplify right side
    628,005.63x = 295,974,386,952.17
  5. Step 5: Solve for x
    x = 295,974,386,952.17/628,005.63
  6. Step 6: Final answer
    x = 471,292.57

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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.