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Finding the Fourth Proportional to 471,371.40, 706,916.16 and 134,388.72

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Solution

The fourth proportional to 471,371.40, 706,916.16 and 134,388.72 is: 201,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,371.40 : 706,916.16 = 134,388.72 : x
  2. Step 2: Convert to fraction form
    471,371.40/706,916.16 = 134,388.72/x
  3. Step 3: Cross multiply
    471,371.40x = 706,916.16 × 134,388.72
  4. Step 4: Simplify right side
    471,371.40x = 95,001,557,889.72
  5. Step 5: Solve for x
    x = 95,001,557,889.72/471,371.40
  6. Step 6: Final answer
    x = 201,542.90

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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.