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Finding the Fourth Proportional to 14,968.70, 20,656.95 and 8,254.60

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Solution

The fourth proportional to 14,968.70, 20,656.95 and 8,254.60 is: 11,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,968.70 : 20,656.95 = 8,254.60 : x
  2. Step 2: Convert to fraction form
    14,968.70/20,656.95 = 8,254.60/x
  3. Step 3: Cross multiply
    14,968.70x = 20,656.95 × 8,254.60
  4. Step 4: Simplify right side
    14,968.70x = 170,514,859.47
  5. Step 5: Solve for x
    x = 170,514,859.47/14,968.70
  6. Step 6: Final answer
    x = 11,391.43

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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.