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Finding the Fourth Proportional to 52,863.30, 79,275.90 and 15,415.86

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Solution

The fourth proportional to 52,863.30, 79,275.90 and 15,415.86 is: 23,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,863.30 : 79,275.90 = 15,415.86 : x
  2. Step 2: Convert to fraction form
    52,863.30/79,275.90 = 15,415.86/x
  3. Step 3: Cross multiply
    52,863.30x = 79,275.90 × 15,415.86
  4. Step 4: Simplify right side
    52,863.30x = 1,222,106,175.77
  5. Step 5: Solve for x
    x = 1,222,106,175.77/52,863.30
  6. Step 6: Final answer
    x = 23,118.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.