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Finding the Fourth Proportional to 640,035.92, 883,212.90 and 382,203.80

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Solution

The fourth proportional to 640,035.92, 883,212.90 and 382,203.80 is: 527,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,035.92 : 883,212.90 = 382,203.80 : x
  2. Step 2: Convert to fraction form
    640,035.92/883,212.90 = 382,203.80/x
  3. Step 3: Cross multiply
    640,035.92x = 883,212.90 × 382,203.80
  4. Step 4: Simplify right side
    640,035.92x = 337,567,326,589.02
  5. Step 5: Solve for x
    x = 337,567,326,589.02/640,035.92
  6. Step 6: Final answer
    x = 527,419.35

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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.