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Finding the Fourth Proportional to 161,515.86, 222,889.65 and 89,895.90

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Solution

The fourth proportional to 161,515.86, 222,889.65 and 89,895.90 is: 124,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,515.86 : 222,889.65 = 89,895.90 : x
  2. Step 2: Convert to fraction form
    161,515.86/222,889.65 = 89,895.90/x
  3. Step 3: Cross multiply
    161,515.86x = 222,889.65 × 89,895.90
  4. Step 4: Simplify right side
    161,515.86x = 20,036,865,237.96
  5. Step 5: Solve for x
    x = 20,036,865,237.96/161,515.86
  6. Step 6: Final answer
    x = 124,055.10

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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.