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Finding the Fourth Proportional to 92,939.48, 139,479.32 and 43,054.56

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Solution

The fourth proportional to 92,939.48, 139,479.32 and 43,054.56 is: 64,614.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,939.48 : 139,479.32 = 43,054.56 : x
  2. Step 2: Convert to fraction form
    92,939.48/139,479.32 = 43,054.56/x
  3. Step 3: Cross multiply
    92,939.48x = 139,479.32 × 43,054.56
  4. Step 4: Simplify right side
    92,939.48x = 6,005,220,751.70
  5. Step 5: Solve for x
    x = 6,005,220,751.70/92,939.48
  6. Step 6: Final answer
    x = 64,614.31

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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.