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Finding the Fourth Proportional to 668,891.79, 922,807.92 and 382,258.11

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Solution

The fourth proportional to 668,891.79, 922,807.92 and 382,258.11 is: 527,366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,891.79 : 922,807.92 = 382,258.11 : x
  2. Step 2: Convert to fraction form
    668,891.79/922,807.92 = 382,258.11/x
  3. Step 3: Cross multiply
    668,891.79x = 922,807.92 × 382,258.11
  4. Step 4: Simplify right side
    668,891.79x = 352,750,811,392.23
  5. Step 5: Solve for x
    x = 352,750,811,392.23/668,891.79
  6. Step 6: Final answer
    x = 527,366.04

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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.