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Finding the Fourth Proportional to 18,696.02, 28,068.53 and 13,151.97

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Solution

The fourth proportional to 18,696.02, 28,068.53 and 13,151.97 is: 19,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.02 : 28,068.53 = 13,151.97 : x
  2. Step 2: Convert to fraction form
    18,696.02/28,068.53 = 13,151.97/x
  3. Step 3: Cross multiply
    18,696.02x = 28,068.53 × 13,151.97
  4. Step 4: Simplify right side
    18,696.02x = 369,156,398.74
  5. Step 5: Solve for x
    x = 369,156,398.74/18,696.02
  6. Step 6: Final answer
    x = 19,745.19

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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.