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Finding the Fourth Proportional to 8,669.04, 11,963.28 and 4,690.20

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Solution

The fourth proportional to 8,669.04, 11,963.28 and 4,690.20 is: 6,472.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.04 : 11,963.28 = 4,690.20 : x
  2. Step 2: Convert to fraction form
    8,669.04/11,963.28 = 4,690.20/x
  3. Step 3: Cross multiply
    8,669.04x = 11,963.28 × 4,690.20
  4. Step 4: Simplify right side
    8,669.04x = 56,110,175.86
  5. Step 5: Solve for x
    x = 56,110,175.86/8,669.04
  6. Step 6: Final answer
    x = 6,472.48

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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.