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Finding the Fourth Proportional to 18,462.88, 25,483.12 and 10,509.36

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Solution

The fourth proportional to 18,462.88, 25,483.12 and 10,509.36 is: 14,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.88 : 25,483.12 = 10,509.36 : x
  2. Step 2: Convert to fraction form
    18,462.88/25,483.12 = 10,509.36/x
  3. Step 3: Cross multiply
    18,462.88x = 25,483.12 × 10,509.36
  4. Step 4: Simplify right side
    18,462.88x = 267,811,282.00
  5. Step 5: Solve for x
    x = 267,811,282.00/18,462.88
  6. Step 6: Final answer
    x = 14,505.39

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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.