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Finding the Fourth Proportional to 640,034.92, 883,211.52 and 382,202.80

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Solution

The fourth proportional to 640,034.92, 883,211.52 and 382,202.80 is: 527,417.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,034.92 : 883,211.52 = 382,202.80 : x
  2. Step 2: Convert to fraction form
    640,034.92/883,211.52 = 382,202.80/x
  3. Step 3: Cross multiply
    640,034.92x = 883,211.52 × 382,202.80
  4. Step 4: Simplify right side
    640,034.92x = 337,565,915,936.26
  5. Step 5: Solve for x
    x = 337,565,915,936.26/640,034.92
  6. Step 6: Final answer
    x = 527,417.97

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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.