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Finding the Fourth Proportional to 14,400.79, 19,873.86 and 8,432.91

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Solution

The fourth proportional to 14,400.79, 19,873.86 and 8,432.91 is: 11,637.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.79 : 19,873.86 = 8,432.91 : x
  2. Step 2: Convert to fraction form
    14,400.79/19,873.86 = 8,432.91/x
  3. Step 3: Cross multiply
    14,400.79x = 19,873.86 × 8,432.91
  4. Step 4: Simplify right side
    14,400.79x = 167,594,441.11
  5. Step 5: Solve for x
    x = 167,594,441.11/14,400.79
  6. Step 6: Final answer
    x = 11,637.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.