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Finding the Fourth Proportional to 99,156.56, 148,736.64 and 36,021.52

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Solution

The fourth proportional to 99,156.56, 148,736.64 and 36,021.52 is: 54,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,156.56 : 148,736.64 = 36,021.52 : x
  2. Step 2: Convert to fraction form
    99,156.56/148,736.64 = 36,021.52/x
  3. Step 3: Cross multiply
    99,156.56x = 148,736.64 × 36,021.52
  4. Step 4: Simplify right side
    99,156.56x = 5,357,719,852.49
  5. Step 5: Solve for x
    x = 5,357,719,852.49/99,156.56
  6. Step 6: Final answer
    x = 54,032.93

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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.