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Finding the Fourth Proportional to 143,652.87, 198,145.98 and 89,844.47

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Solution

The fourth proportional to 143,652.87, 198,145.98 and 89,844.47 is: 123,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,652.87 : 198,145.98 = 89,844.47 : x
  2. Step 2: Convert to fraction form
    143,652.87/198,145.98 = 89,844.47/x
  3. Step 3: Cross multiply
    143,652.87x = 198,145.98 × 89,844.47
  4. Step 4: Simplify right side
    143,652.87x = 17,802,319,561.25
  5. Step 5: Solve for x
    x = 17,802,319,561.25/143,652.87
  6. Step 6: Final answer
    x = 123,925.96

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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.