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Finding the Fourth Proportional to 157,606.74, 217,503.40 and 89,629.92

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Solution

The fourth proportional to 157,606.74, 217,503.40 and 89,629.92 is: 123,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,606.74 : 217,503.40 = 89,629.92 : x
  2. Step 2: Convert to fraction form
    157,606.74/217,503.40 = 89,629.92/x
  3. Step 3: Cross multiply
    157,606.74x = 217,503.40 × 89,629.92
  4. Step 4: Simplify right side
    157,606.74x = 19,494,811,254.21
  5. Step 5: Solve for x
    x = 19,494,811,254.21/157,606.74
  6. Step 6: Final answer
    x = 123,692.75

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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.