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Finding the Fourth Proportional to 1,136,971.62, 1,568,979.72 and 627,663.06

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Solution

The fourth proportional to 1,136,971.62, 1,568,979.72 and 627,663.06 is: 866,152.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136,971.62 : 1,568,979.72 = 627,663.06 : x
  2. Step 2: Convert to fraction form
    1,136,971.62/1,568,979.72 = 627,663.06/x
  3. Step 3: Cross multiply
    1,136,971.62x = 1,568,979.72 × 627,663.06
  4. Step 4: Simplify right side
    1,136,971.62x = 984,790,612,133.14
  5. Step 5: Solve for x
    x = 984,790,612,133.14/1,136,971.62
  6. Step 6: Final answer
    x = 866,152.33

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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.