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Finding the Fourth Proportional to 98,859.92, 148,288.72 and 39,694.55

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Solution

The fourth proportional to 98,859.92, 148,288.72 and 39,694.55 is: 59,541.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,859.92 : 148,288.72 = 39,694.55 : x
  2. Step 2: Convert to fraction form
    98,859.92/148,288.72 = 39,694.55/x
  3. Step 3: Cross multiply
    98,859.92x = 148,288.72 × 39,694.55
  4. Step 4: Simplify right side
    98,859.92x = 5,886,254,010.48
  5. Step 5: Solve for x
    x = 5,886,254,010.48/98,859.92
  6. Step 6: Final answer
    x = 59,541.36

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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.