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Finding the Fourth Proportional to 12,368.70, 18,523.89 and 9,572.99

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Solution

The fourth proportional to 12,368.70, 18,523.89 and 9,572.99 is: 14,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.70 : 18,523.89 = 9,572.99 : x
  2. Step 2: Convert to fraction form
    12,368.70/18,523.89 = 9,572.99/x
  3. Step 3: Cross multiply
    12,368.70x = 18,523.89 × 9,572.99
  4. Step 4: Simplify right side
    12,368.70x = 177,328,921.11
  5. Step 5: Solve for x
    x = 177,328,921.11/12,368.70
  6. Step 6: Final answer
    x = 14,336.91

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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.