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Finding the Fourth Proportional to 67,891.77, 93,695.18 and 39,216.56

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Solution

The fourth proportional to 67,891.77, 93,695.18 and 39,216.56 is: 54,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,891.77 : 93,695.18 = 39,216.56 : x
  2. Step 2: Convert to fraction form
    67,891.77/93,695.18 = 39,216.56/x
  3. Step 3: Cross multiply
    67,891.77x = 93,695.18 × 39,216.56
  4. Step 4: Simplify right side
    67,891.77x = 3,674,402,204.22
  5. Step 5: Solve for x
    x = 3,674,402,204.22/67,891.77
  6. Step 6: Final answer
    x = 54,121.47

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1.5x scale

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.