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Finding the Fourth Proportional to 16,931.64, 25,400.64 and 7,572.03

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Solution

The fourth proportional to 16,931.64, 25,400.64 and 7,572.03 is: 11,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.64 : 25,400.64 = 7,572.03 : x
  2. Step 2: Convert to fraction form
    16,931.64/25,400.64 = 7,572.03/x
  3. Step 3: Cross multiply
    16,931.64x = 25,400.64 × 7,572.03
  4. Step 4: Simplify right side
    16,931.64x = 192,334,408.10
  5. Step 5: Solve for x
    x = 192,334,408.10/16,931.64
  6. Step 6: Final answer
    x = 11,359.47

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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.