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Finding the Fourth Proportional to 68,373.81, 94,309.76 and 59,405.90

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Solution

The fourth proportional to 68,373.81, 94,309.76 and 59,405.90 is: 81,940.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,373.81 : 94,309.76 = 59,405.90 : x
  2. Step 2: Convert to fraction form
    68,373.81/94,309.76 = 59,405.90/x
  3. Step 3: Cross multiply
    68,373.81x = 94,309.76 × 59,405.90
  4. Step 4: Simplify right side
    68,373.81x = 5,602,555,403.01
  5. Step 5: Solve for x
    x = 5,602,555,403.01/68,373.81
  6. Step 6: Final answer
    x = 81,940.08

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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.