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Finding the Fourth Proportional to 98,689.92, 148,054.32 and 36,360.96

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Solution

The fourth proportional to 98,689.92, 148,054.32 and 36,360.96 is: 54,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,689.92 : 148,054.32 = 36,360.96 : x
  2. Step 2: Convert to fraction form
    98,689.92/148,054.32 = 36,360.96/x
  3. Step 3: Cross multiply
    98,689.92x = 148,054.32 × 36,360.96
  4. Step 4: Simplify right side
    98,689.92x = 5,383,397,207.35
  5. Step 5: Solve for x
    x = 5,383,397,207.35/98,689.92
  6. Step 6: Final answer
    x = 54,548.60

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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.