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Finding the Fourth Proportional to 627,641.59, 866,141.90 and 355,760.89

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Solution

The fourth proportional to 627,641.59, 866,141.90 and 355,760.89 is: 490,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,641.59 : 866,141.90 = 355,760.89 : x
  2. Step 2: Convert to fraction form
    627,641.59/866,141.90 = 355,760.89/x
  3. Step 3: Cross multiply
    627,641.59x = 866,141.90 × 355,760.89
  4. Step 4: Simplify right side
    627,641.59x = 308,139,411,431.49
  5. Step 5: Solve for x
    x = 308,139,411,431.49/627,641.59
  6. Step 6: Final answer
    x = 490,948.04

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1.5x scale

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.