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Finding the Fourth Proportional to 14,969.92, 20,658.21 and 8,256.16

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Solution

The fourth proportional to 14,969.92, 20,658.21 and 8,256.16 is: 11,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,969.92 : 20,658.21 = 8,256.16 : x
  2. Step 2: Convert to fraction form
    14,969.92/20,658.21 = 8,256.16/x
  3. Step 3: Cross multiply
    14,969.92x = 20,658.21 × 8,256.16
  4. Step 4: Simplify right side
    14,969.92x = 170,557,538.72
  5. Step 5: Solve for x
    x = 170,557,538.72/14,969.92
  6. Step 6: Final answer
    x = 11,393.35

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1.5x scale

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.