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Finding the Fourth Proportional to 19,445.13, 29,143.99 and 10,079.99

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Solution

The fourth proportional to 19,445.13, 29,143.99 and 10,079.99 is: 15,107.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,445.13 : 29,143.99 = 10,079.99 : x
  2. Step 2: Convert to fraction form
    19,445.13/29,143.99 = 10,079.99/x
  3. Step 3: Cross multiply
    19,445.13x = 29,143.99 × 10,079.99
  4. Step 4: Simplify right side
    19,445.13x = 293,771,127.76
  5. Step 5: Solve for x
    x = 293,771,127.76/19,445.13
  6. Step 6: Final answer
    x = 15,107.70

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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.