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Finding the Fourth Proportional to 67,345.88, 92,948.27 and 40,515.50

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Solution

The fourth proportional to 67,345.88, 92,948.27 and 40,515.50 is: 55,917.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,345.88 : 92,948.27 = 40,515.50 : x
  2. Step 2: Convert to fraction form
    67,345.88/92,948.27 = 40,515.50/x
  3. Step 3: Cross multiply
    67,345.88x = 92,948.27 × 40,515.50
  4. Step 4: Simplify right side
    67,345.88x = 3,765,845,633.19
  5. Step 5: Solve for x
    x = 3,765,845,633.19/67,345.88
  6. Step 6: Final answer
    x = 55,917.98

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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.