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Finding the Fourth Proportional to 18,624.86, 25,702.36 and 10,126.99

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Solution

The fourth proportional to 18,624.86, 25,702.36 and 10,126.99 is: 13,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.86 : 25,702.36 = 10,126.99 : x
  2. Step 2: Convert to fraction form
    18,624.86/25,702.36 = 10,126.99/x
  3. Step 3: Cross multiply
    18,624.86x = 25,702.36 × 10,126.99
  4. Step 4: Simplify right side
    18,624.86x = 260,287,404.93
  5. Step 5: Solve for x
    x = 260,287,404.93/18,624.86
  6. Step 6: Final answer
    x = 13,975.27

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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.