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Finding the Fourth Proportional to 69,812.87, 96,399.93 and 64,747.58

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Solution

The fourth proportional to 69,812.87, 96,399.93 and 64,747.58 is: 89,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,812.87 : 96,399.93 = 64,747.58 : x
  2. Step 2: Convert to fraction form
    69,812.87/96,399.93 = 64,747.58/x
  3. Step 3: Cross multiply
    69,812.87x = 96,399.93 × 64,747.58
  4. Step 4: Simplify right side
    69,812.87x = 6,241,662,179.67
  5. Step 5: Solve for x
    x = 6,241,662,179.67/69,812.87
  6. Step 6: Final answer
    x = 89,405.61

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1.5x scale

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.