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Finding the Fourth Proportional to 641,299.62, 884,855.61 and 386,645.34

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Solution

The fourth proportional to 641,299.62, 884,855.61 and 386,645.34 is: 533,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,299.62 : 884,855.61 = 386,645.34 : x
  2. Step 2: Convert to fraction form
    641,299.62/884,855.61 = 386,645.34/x
  3. Step 3: Cross multiply
    641,299.62x = 884,855.61 × 386,645.34
  4. Step 4: Simplify right side
    641,299.62x = 342,125,298,179.36
  5. Step 5: Solve for x
    x = 342,125,298,179.36/641,299.62
  6. Step 6: Final answer
    x = 533,487.45

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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.