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Finding the Fourth Proportional to 605,615.72, 908,799.42 and 411,293.48

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Solution

The fourth proportional to 605,615.72, 908,799.42 and 411,293.48 is: 617,195.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,615.72 : 908,799.42 = 411,293.48 : x
  2. Step 2: Convert to fraction form
    605,615.72/908,799.42 = 411,293.48/x
  3. Step 3: Cross multiply
    605,615.72x = 908,799.42 × 411,293.48
  4. Step 4: Simplify right side
    605,615.72x = 373,783,276,073.78
  5. Step 5: Solve for x
    x = 373,783,276,073.78/605,615.72
  6. Step 6: Final answer
    x = 617,195.47

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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.