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Finding the Fourth Proportional to 330,011.70, 455,416.68 and 179,109.06

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Solution

The fourth proportional to 330,011.70, 455,416.68 and 179,109.06 is: 247,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,011.70 : 455,416.68 = 179,109.06 : x
  2. Step 2: Convert to fraction form
    330,011.70/455,416.68 = 179,109.06/x
  3. Step 3: Cross multiply
    330,011.70x = 455,416.68 × 179,109.06
  4. Step 4: Simplify right side
    330,011.70x = 81,569,253,463.12
  5. Step 5: Solve for x
    x = 81,569,253,463.12/330,011.70
  6. Step 6: Final answer
    x = 247,170.79

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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.