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Finding the Fourth Proportional to 67,248.36, 92,798.46 and 40,392

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Solution

The fourth proportional to 67,248.36, 92,798.46 and 40,392 is: 55,738.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,248.36 : 92,798.46 = 40,392 : x
  2. Step 2: Convert to fraction form
    67,248.36/92,798.46 = 40,392/x
  3. Step 3: Cross multiply
    67,248.36x = 92,798.46 × 40,392
  4. Step 4: Simplify right side
    67,248.36x = 3,748,315,396.32
  5. Step 5: Solve for x
    x = 3,748,315,396.32/67,248.36
  6. Step 6: Final answer
    x = 55,738.39

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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.