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Finding the Fourth Proportional to 14,967.61, 20,655.44 and 8,253.48

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Solution

The fourth proportional to 14,967.61, 20,655.44 and 8,253.48 is: 11,389.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.61 : 20,655.44 = 8,253.48 : x
  2. Step 2: Convert to fraction form
    14,967.61/20,655.44 = 8,253.48/x
  3. Step 3: Cross multiply
    14,967.61x = 20,655.44 × 8,253.48
  4. Step 4: Simplify right side
    14,967.61x = 170,479,211.89
  5. Step 5: Solve for x
    x = 170,479,211.89/14,967.61
  6. Step 6: Final answer
    x = 11,389.88

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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.