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Finding the Fourth Proportional to 16,938.86, 25,423.90 and 8,624.87

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Solution

The fourth proportional to 16,938.86, 25,423.90 and 8,624.87 is: 12,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.86 : 25,423.90 = 8,624.87 : x
  2. Step 2: Convert to fraction form
    16,938.86/25,423.90 = 8,624.87/x
  3. Step 3: Cross multiply
    16,938.86x = 25,423.90 × 8,624.87
  4. Step 4: Simplify right side
    16,938.86x = 219,277,683.71
  5. Step 5: Solve for x
    x = 219,277,683.71/16,938.86
  6. Step 6: Final answer
    x = 12,945.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.