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Finding the Fourth Proportional to 64,424.46, 88,879.50 and 43,210.56

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Solution

The fourth proportional to 64,424.46, 88,879.50 and 43,210.56 is: 59,612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,424.46 : 88,879.50 = 43,210.56 : x
  2. Step 2: Convert to fraction form
    64,424.46/88,879.50 = 43,210.56/x
  3. Step 3: Cross multiply
    64,424.46x = 88,879.50 × 43,210.56
  4. Step 4: Simplify right side
    64,424.46x = 3,840,532,967.52
  5. Step 5: Solve for x
    x = 3,840,532,967.52/64,424.46
  6. Step 6: Final answer
    x = 59,612.96

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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.