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Finding the Fourth Proportional to 15,964.91, 22,030.72 and 9,158.59

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Solution

The fourth proportional to 15,964.91, 22,030.72 and 9,158.59 is: 12,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,964.91 : 22,030.72 = 9,158.59 : x
  2. Step 2: Convert to fraction form
    15,964.91/22,030.72 = 9,158.59/x
  3. Step 3: Cross multiply
    15,964.91x = 22,030.72 × 9,158.59
  4. Step 4: Simplify right side
    15,964.91x = 201,770,331.88
  5. Step 5: Solve for x
    x = 201,770,331.88/15,964.91
  6. Step 6: Final answer
    x = 12,638.36

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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.