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Finding the Fourth Proportional to 98,797.70, 136,303.61 and 64,824.92

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Solution

The fourth proportional to 98,797.70, 136,303.61 and 64,824.92 is: 89,433.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,797.70 : 136,303.61 = 64,824.92 : x
  2. Step 2: Convert to fraction form
    98,797.70/136,303.61 = 64,824.92/x
  3. Step 3: Cross multiply
    98,797.70x = 136,303.61 × 64,824.92
  4. Step 4: Simplify right side
    98,797.70x = 8,835,869,608.32
  5. Step 5: Solve for x
    x = 8,835,869,608.32/98,797.70
  6. Step 6: Final answer
    x = 89,433.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.