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Finding the Fourth Proportional to 624,469.47, 861,783.62 and 382,885.25

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Solution

The fourth proportional to 624,469.47, 861,783.62 and 382,885.25 is: 528,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,469.47 : 861,783.62 = 382,885.25 : x
  2. Step 2: Convert to fraction form
    624,469.47/861,783.62 = 382,885.25/x
  3. Step 3: Cross multiply
    624,469.47x = 861,783.62 × 382,885.25
  4. Step 4: Simplify right side
    624,469.47x = 329,964,236,789.61
  5. Step 5: Solve for x
    x = 329,964,236,789.61/624,469.47
  6. Step 6: Final answer
    x = 528,391.30

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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.