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Finding the Fourth Proportional to 19,183.71, 28,792.05 and 7,505.13

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Solution

The fourth proportional to 19,183.71, 28,792.05 and 7,505.13 is: 11,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,183.71 : 28,792.05 = 7,505.13 : x
  2. Step 2: Convert to fraction form
    19,183.71/28,792.05 = 7,505.13/x
  3. Step 3: Cross multiply
    19,183.71x = 28,792.05 × 7,505.13
  4. Step 4: Simplify right side
    19,183.71x = 216,088,078.22
  5. Step 5: Solve for x
    x = 216,088,078.22/19,183.71
  6. Step 6: Final answer
    x = 11,264.14

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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.