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Finding the Fourth Proportional to 627,603.12, 866,063.61 and 355,655.07

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Solution

The fourth proportional to 627,603.12, 866,063.61 and 355,655.07 is: 490,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,603.12 : 866,063.61 = 355,655.07 : x
  2. Step 2: Convert to fraction form
    627,603.12/866,063.61 = 355,655.07/x
  3. Step 3: Cross multiply
    627,603.12x = 866,063.61 × 355,655.07
  4. Step 4: Simplify right side
    627,603.12x = 308,019,913,839.00
  5. Step 5: Solve for x
    x = 308,019,913,839.00/627,603.12
  6. Step 6: Final answer
    x = 490,787.74

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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.