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Finding the Fourth Proportional to 99,651.56, 149,434.02 and 28,558.53

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Solution

The fourth proportional to 99,651.56, 149,434.02 and 28,558.53 is: 42,825.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.56 : 149,434.02 = 28,558.53 : x
  2. Step 2: Convert to fraction form
    99,651.56/149,434.02 = 28,558.53/x
  3. Step 3: Cross multiply
    99,651.56x = 149,434.02 × 28,558.53
  4. Step 4: Simplify right side
    99,651.56x = 4,267,615,943.19
  5. Step 5: Solve for x
    x = 4,267,615,943.19/99,651.56
  6. Step 6: Final answer
    x = 42,825.38

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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.