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Finding the Fourth Proportional to 658,396.89, 986,641.16 and 278,793.63

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Solution

The fourth proportional to 658,396.89, 986,641.16 and 278,793.63 is: 417,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,396.89 : 986,641.16 = 278,793.63 : x
  2. Step 2: Convert to fraction form
    658,396.89/986,641.16 = 278,793.63/x
  3. Step 3: Cross multiply
    658,396.89x = 986,641.16 × 278,793.63
  4. Step 4: Simplify right side
    658,396.89x = 275,069,269,109.84
  5. Step 5: Solve for x
    x = 275,069,269,109.84/658,396.89
  6. Step 6: Final answer
    x = 417,786.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.