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Finding the Fourth Proportional to 16,718.64, 25,073.93 and 4,869.20

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Solution

The fourth proportional to 16,718.64, 25,073.93 and 4,869.20 is: 7,302.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,718.64 : 25,073.93 = 4,869.20 : x
  2. Step 2: Convert to fraction form
    16,718.64/25,073.93 = 4,869.20/x
  3. Step 3: Cross multiply
    16,718.64x = 25,073.93 × 4,869.20
  4. Step 4: Simplify right side
    16,718.64x = 122,089,900.08
  5. Step 5: Solve for x
    x = 122,089,900.08/16,718.64
  6. Step 6: Final answer
    x = 7,302.62

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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.