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Finding the Fourth Proportional to 207,758.05, 286,688.89 and 117,136.29

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Solution

The fourth proportional to 207,758.05, 286,688.89 and 117,136.29 is: 161,638.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,758.05 : 286,688.89 = 117,136.29 : x
  2. Step 2: Convert to fraction form
    207,758.05/286,688.89 = 117,136.29/x
  3. Step 3: Cross multiply
    207,758.05x = 286,688.89 × 117,136.29
  4. Step 4: Simplify right side
    207,758.05x = 33,581,673,521.43
  5. Step 5: Solve for x
    x = 33,581,673,521.43/207,758.05
  6. Step 6: Final answer
    x = 161,638.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.