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Finding the Fourth Proportional to 576,696.94, 795,864.30 and 318,587.20

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Solution

The fourth proportional to 576,696.94, 795,864.30 and 318,587.20 is: 439,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,696.94 : 795,864.30 = 318,587.20 : x
  2. Step 2: Convert to fraction form
    576,696.94/795,864.30 = 318,587.20/x
  3. Step 3: Cross multiply
    576,696.94x = 795,864.30 × 318,587.20
  4. Step 4: Simplify right side
    576,696.94x = 253,552,178,916.96
  5. Step 5: Solve for x
    x = 253,552,178,916.96/576,696.94
  6. Step 6: Final answer
    x = 439,662.78

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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.