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Finding the Fourth Proportional to 425,133.90, 637,682.40 and 158,896.72

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Solution

The fourth proportional to 425,133.90, 637,682.40 and 158,896.72 is: 238,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,133.90 : 637,682.40 = 158,896.72 : x
  2. Step 2: Convert to fraction form
    425,133.90/637,682.40 = 158,896.72/x
  3. Step 3: Cross multiply
    425,133.90x = 637,682.40 × 158,896.72
  4. Step 4: Simplify right side
    425,133.90x = 101,325,641,761.73
  5. Step 5: Solve for x
    x = 101,325,641,761.73/425,133.90
  6. Step 6: Final answer
    x = 238,338.18

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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.