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Finding the Fourth Proportional to 13,232.88, 18,261.88 and 7,264.80

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Solution

The fourth proportional to 13,232.88, 18,261.88 and 7,264.80 is: 10,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,232.88 : 18,261.88 = 7,264.80 : x
  2. Step 2: Convert to fraction form
    13,232.88/18,261.88 = 7,264.80/x
  3. Step 3: Cross multiply
    13,232.88x = 18,261.88 × 7,264.80
  4. Step 4: Simplify right side
    13,232.88x = 132,668,905.82
  5. Step 5: Solve for x
    x = 132,668,905.82/13,232.88
  6. Step 6: Final answer
    x = 10,025.70

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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.