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Finding the Fourth Proportional to 68,851.16, 103,274.58 and 19,603.16

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Solution

The fourth proportional to 68,851.16, 103,274.58 and 19,603.16 is: 29,404.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,851.16 : 103,274.58 = 19,603.16 : x
  2. Step 2: Convert to fraction form
    68,851.16/103,274.58 = 19,603.16/x
  3. Step 3: Cross multiply
    68,851.16x = 103,274.58 × 19,603.16
  4. Step 4: Simplify right side
    68,851.16x = 2,024,508,115.67
  5. Step 5: Solve for x
    x = 2,024,508,115.67/68,851.16
  6. Step 6: Final answer
    x = 29,404.13

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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.