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Finding the Fourth Proportional to 19,366.89, 29,055.18 and 5,515.89

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Solution

The fourth proportional to 19,366.89, 29,055.18 and 5,515.89 is: 8,275.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,366.89 : 29,055.18 = 5,515.89 : x
  2. Step 2: Convert to fraction form
    19,366.89/29,055.18 = 5,515.89/x
  3. Step 3: Cross multiply
    19,366.89x = 29,055.18 × 5,515.89
  4. Step 4: Simplify right side
    19,366.89x = 160,265,176.81
  5. Step 5: Solve for x
    x = 160,265,176.81/19,366.89
  6. Step 6: Final answer
    x = 8,275.21

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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.