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Finding the Fourth Proportional to 612,043.47, 844,720.20 and 509,906.97

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Solution

The fourth proportional to 612,043.47, 844,720.20 and 509,906.97 is: 703,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,043.47 : 844,720.20 = 509,906.97 : x
  2. Step 2: Convert to fraction form
    612,043.47/844,720.20 = 509,906.97/x
  3. Step 3: Cross multiply
    612,043.47x = 844,720.20 × 509,906.97
  4. Step 4: Simplify right side
    612,043.47x = 430,728,717,679.79
  5. Step 5: Solve for x
    x = 430,728,717,679.79/612,043.47
  6. Step 6: Final answer
    x = 703,755.11

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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.