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Finding the Fourth Proportional to 75,342.46, 112,955.36 and 43,703.86

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Solution

The fourth proportional to 75,342.46, 112,955.36 and 43,703.86 is: 65,521.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,342.46 : 112,955.36 = 43,703.86 : x
  2. Step 2: Convert to fraction form
    75,342.46/112,955.36 = 43,703.86/x
  3. Step 3: Cross multiply
    75,342.46x = 112,955.36 × 43,703.86
  4. Step 4: Simplify right side
    75,342.46x = 4,936,585,239.69
  5. Step 5: Solve for x
    x = 4,936,585,239.69/75,342.46
  6. Step 6: Final answer
    x = 65,521.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.