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Finding the Fourth Proportional to 56,991.43, 85,410.72 and 44,356.45

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Solution

The fourth proportional to 56,991.43, 85,410.72 and 44,356.45 is: 66,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,991.43 : 85,410.72 = 44,356.45 : x
  2. Step 2: Convert to fraction form
    56,991.43/85,410.72 = 44,356.45/x
  3. Step 3: Cross multiply
    56,991.43x = 85,410.72 × 44,356.45
  4. Step 4: Simplify right side
    56,991.43x = 3,788,516,331.14
  5. Step 5: Solve for x
    x = 3,788,516,331.14/56,991.43
  6. Step 6: Final answer
    x = 66,475.19

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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.