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Finding the Fourth Proportional to 681,244.16, 940,116.48 and 394,930.40

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Solution

The fourth proportional to 681,244.16, 940,116.48 and 394,930.40 is: 545,003.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,244.16 : 940,116.48 = 394,930.40 : x
  2. Step 2: Convert to fraction form
    681,244.16/940,116.48 = 394,930.40/x
  3. Step 3: Cross multiply
    681,244.16x = 940,116.48 × 394,930.40
  4. Step 4: Simplify right side
    681,244.16x = 371,280,577,492.99
  5. Step 5: Solve for x
    x = 371,280,577,492.99/681,244.16
  6. Step 6: Final answer
    x = 545,003.68

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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.