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Finding the Fourth Proportional to 99,580.68, 149,398.74 and 43,425.77

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Solution

The fourth proportional to 99,580.68, 149,398.74 and 43,425.77 is: 65,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,580.68 : 149,398.74 = 43,425.77 : x
  2. Step 2: Convert to fraction form
    99,580.68/149,398.74 = 43,425.77/x
  3. Step 3: Cross multiply
    99,580.68x = 149,398.74 × 43,425.77
  4. Step 4: Simplify right side
    99,580.68x = 6,487,754,574.54
  5. Step 5: Solve for x
    x = 6,487,754,574.54/99,580.68
  6. Step 6: Final answer
    x = 65,150.74

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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.