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Finding the Fourth Proportional to 14,958.74, 20,638.76 and 9,656.58

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Solution

The fourth proportional to 14,958.74, 20,638.76 and 9,656.58 is: 13,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,958.74 : 20,638.76 = 9,656.58 : x
  2. Step 2: Convert to fraction form
    14,958.74/20,638.76 = 9,656.58/x
  3. Step 3: Cross multiply
    14,958.74x = 20,638.76 × 9,656.58
  4. Step 4: Simplify right side
    14,958.74x = 199,299,837.04
  5. Step 5: Solve for x
    x = 199,299,837.04/14,958.74
  6. Step 6: Final answer
    x = 13,323.30

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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.