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Finding the Fourth Proportional to 443,901.51, 665,436.60 and 216,147.33

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Solution

The fourth proportional to 443,901.51, 665,436.60 and 216,147.33 is: 324,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,901.51 : 665,436.60 = 216,147.33 : x
  2. Step 2: Convert to fraction form
    443,901.51/665,436.60 = 216,147.33/x
  3. Step 3: Cross multiply
    443,901.51x = 665,436.60 × 216,147.33
  4. Step 4: Simplify right side
    443,901.51x = 143,832,344,374.28
  5. Step 5: Solve for x
    x = 143,832,344,374.28/443,901.51
  6. Step 6: Final answer
    x = 324,018.60

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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.