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Finding the Fourth Proportional to 15,031.08, 20,730.26 and 11,263.08

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Solution

The fourth proportional to 15,031.08, 20,730.26 and 11,263.08 is: 15,533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.08 : 20,730.26 = 11,263.08 : x
  2. Step 2: Convert to fraction form
    15,031.08/20,730.26 = 11,263.08/x
  3. Step 3: Cross multiply
    15,031.08x = 20,730.26 × 11,263.08
  4. Step 4: Simplify right side
    15,031.08x = 233,486,576.80
  5. Step 5: Solve for x
    x = 233,486,576.80/15,031.08
  6. Step 6: Final answer
    x = 15,533.59

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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.