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Finding the Fourth Proportional to 189,761.32, 284,632.26 and 56,642.68

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Solution

The fourth proportional to 189,761.32, 284,632.26 and 56,642.68 is: 84,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,761.32 : 284,632.26 = 56,642.68 : x
  2. Step 2: Convert to fraction form
    189,761.32/284,632.26 = 56,642.68/x
  3. Step 3: Cross multiply
    189,761.32x = 284,632.26 × 56,642.68
  4. Step 4: Simplify right side
    189,761.32x = 16,122,334,020.86
  5. Step 5: Solve for x
    x = 16,122,334,020.86/189,761.32
  6. Step 6: Final answer
    x = 84,961.12

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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.