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Finding the Fourth Proportional to 99,055.92, 148,620.87 and 39,908.37

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Solution

The fourth proportional to 99,055.92, 148,620.87 and 39,908.37 is: 59,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,055.92 : 148,620.87 = 39,908.37 : x
  2. Step 2: Convert to fraction form
    99,055.92/148,620.87 = 39,908.37/x
  3. Step 3: Cross multiply
    99,055.92x = 148,620.87 × 39,908.37
  4. Step 4: Simplify right side
    99,055.92x = 5,931,216,669.68
  5. Step 5: Solve for x
    x = 5,931,216,669.68/99,055.92
  6. Step 6: Final answer
    x = 59,877.46

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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.