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Finding the Fourth Proportional to 48,645, 67,130.10 and 26,289

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Solution

The fourth proportional to 48,645, 67,130.10 and 26,289 is: 36,278.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,645 : 67,130.10 = 26,289 : x
  2. Step 2: Convert to fraction form
    48,645/67,130.10 = 26,289/x
  3. Step 3: Cross multiply
    48,645x = 67,130.10 × 26,289
  4. Step 4: Simplify right side
    48,645x = 1,764,783,198.90
  5. Step 5: Solve for x
    x = 1,764,783,198.90/48,645
  6. Step 6: Final answer
    x = 36,278.82

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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.