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Finding the Fourth Proportional to 18,488.96, 25,511.21 and 10,531.01

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Solution

The fourth proportional to 18,488.96, 25,511.21 and 10,531.01 is: 14,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.96 : 25,511.21 = 10,531.01 : x
  2. Step 2: Convert to fraction form
    18,488.96/25,511.21 = 10,531.01/x
  3. Step 3: Cross multiply
    18,488.96x = 25,511.21 × 10,531.01
  4. Step 4: Simplify right side
    18,488.96x = 268,658,807.62
  5. Step 5: Solve for x
    x = 268,658,807.62/18,488.96
  6. Step 6: Final answer
    x = 14,530.77

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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.