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Finding the Fourth Proportional to 67,955.86, 101,900.89 and 28,502.38

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Solution

The fourth proportional to 67,955.86, 101,900.89 and 28,502.38 is: 42,739.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,955.86 : 101,900.89 = 28,502.38 : x
  2. Step 2: Convert to fraction form
    67,955.86/101,900.89 = 28,502.38/x
  3. Step 3: Cross multiply
    67,955.86x = 101,900.89 × 28,502.38
  4. Step 4: Simplify right side
    67,955.86x = 2,904,417,889.12
  5. Step 5: Solve for x
    x = 2,904,417,889.12/67,955.86
  6. Step 6: Final answer
    x = 42,739.77

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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.