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Finding the Fourth Proportional to 438,912.77, 605,699.67 and 237,708.77

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Solution

The fourth proportional to 438,912.77, 605,699.67 and 237,708.77 is: 328,038.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,912.77 : 605,699.67 = 237,708.77 : x
  2. Step 2: Convert to fraction form
    438,912.77/605,699.67 = 237,708.77/x
  3. Step 3: Cross multiply
    438,912.77x = 605,699.67 × 237,708.77
  4. Step 4: Simplify right side
    438,912.77x = 143,980,123,545.11
  5. Step 5: Solve for x
    x = 143,980,123,545.11/438,912.77
  6. Step 6: Final answer
    x = 328,038.13

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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.