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Finding the Fourth Proportional to 73,915.70, 102,003.64 and 39,924.17

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Solution

The fourth proportional to 73,915.70, 102,003.64 and 39,924.17 is: 55,095.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,915.70 : 102,003.64 = 39,924.17 : x
  2. Step 2: Convert to fraction form
    73,915.70/102,003.64 = 39,924.17/x
  3. Step 3: Cross multiply
    73,915.70x = 102,003.64 × 39,924.17
  4. Step 4: Simplify right side
    73,915.70x = 4,072,410,054.15
  5. Step 5: Solve for x
    x = 4,072,410,054.15/73,915.70
  6. Step 6: Final answer
    x = 55,095.34

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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.