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Finding the Fourth Proportional to 76,512.84, 105,553.80 and 50,994.42

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Solution

The fourth proportional to 76,512.84, 105,553.80 and 50,994.42 is: 70,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,512.84 : 105,553.80 = 50,994.42 : x
  2. Step 2: Convert to fraction form
    76,512.84/105,553.80 = 50,994.42/x
  3. Step 3: Cross multiply
    76,512.84x = 105,553.80 × 50,994.42
  4. Step 4: Simplify right side
    76,512.84x = 5,382,654,809.80
  5. Step 5: Solve for x
    x = 5,382,654,809.80/76,512.84
  6. Step 6: Final answer
    x = 70,349.69

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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.