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Finding the Fourth Proportional to 67,346.88, 92,943.36 and 39,062.40

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Solution

The fourth proportional to 67,346.88, 92,943.36 and 39,062.40 is: 53,908.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,346.88 : 92,943.36 = 39,062.40 : x
  2. Step 2: Convert to fraction form
    67,346.88/92,943.36 = 39,062.40/x
  3. Step 3: Cross multiply
    67,346.88x = 92,943.36 × 39,062.40
  4. Step 4: Simplify right side
    67,346.88x = 3,630,590,705.66
  5. Step 5: Solve for x
    x = 3,630,590,705.66/67,346.88
  6. Step 6: Final answer
    x = 53,908.82

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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.