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Finding the Fourth Proportional to 625,284.71, 863,190.44 and 418,908.45

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Solution

The fourth proportional to 625,284.71, 863,190.44 and 418,908.45 is: 578,293.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,284.71 : 863,190.44 = 418,908.45 : x
  2. Step 2: Convert to fraction form
    625,284.71/863,190.44 = 418,908.45/x
  3. Step 3: Cross multiply
    625,284.71x = 863,190.44 × 418,908.45
  4. Step 4: Simplify right side
    625,284.71x = 361,597,769,275.22
  5. Step 5: Solve for x
    x = 361,597,769,275.22/625,284.71
  6. Step 6: Final answer
    x = 578,293.00

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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.