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Finding the Fourth Proportional to 99,573.76, 149,349.12 and 25,707.52

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Solution

The fourth proportional to 99,573.76, 149,349.12 and 25,707.52 is: 38,558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,573.76 : 149,349.12 = 25,707.52 : x
  2. Step 2: Convert to fraction form
    99,573.76/149,349.12 = 25,707.52/x
  3. Step 3: Cross multiply
    99,573.76x = 149,349.12 × 25,707.52
  4. Step 4: Simplify right side
    99,573.76x = 3,839,395,489.38
  5. Step 5: Solve for x
    x = 3,839,395,489.38/99,573.76
  6. Step 6: Final answer
    x = 38,558.31

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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.