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Finding the Fourth Proportional to 561,371.67, 774,683.87 and 306,717.39

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Solution

The fourth proportional to 561,371.67, 774,683.87 and 306,717.39 is: 423,265.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,371.67 : 774,683.87 = 306,717.39 : x
  2. Step 2: Convert to fraction form
    561,371.67/774,683.87 = 306,717.39/x
  3. Step 3: Cross multiply
    561,371.67x = 774,683.87 × 306,717.39
  4. Step 4: Simplify right side
    561,371.67x = 237,609,013,147.91
  5. Step 5: Solve for x
    x = 237,609,013,147.91/561,371.67
  6. Step 6: Final answer
    x = 423,265.06

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1.5x scale

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.