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Finding the Fourth Proportional to 681,680.79, 941,617.98 and 509,299.16

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Solution

The fourth proportional to 681,680.79, 941,617.98 and 509,299.16 is: 703,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,680.79 : 941,617.98 = 509,299.16 : x
  2. Step 2: Convert to fraction form
    681,680.79/941,617.98 = 509,299.16/x
  3. Step 3: Cross multiply
    681,680.79x = 941,617.98 × 509,299.16
  4. Step 4: Simplify right side
    681,680.79x = 479,565,241,546.81
  5. Step 5: Solve for x
    x = 479,565,241,546.81/681,680.79
  6. Step 6: Final answer
    x = 703,504.12

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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.