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Finding the Fourth Proportional to 330,125.76, 455,578.56 and 179,222.76

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Solution

The fourth proportional to 330,125.76, 455,578.56 and 179,222.76 is: 247,330.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,125.76 : 455,578.56 = 179,222.76 : x
  2. Step 2: Convert to fraction form
    330,125.76/455,578.56 = 179,222.76/x
  3. Step 3: Cross multiply
    330,125.76x = 455,578.56 × 179,222.76
  4. Step 4: Simplify right side
    330,125.76x = 81,650,046,920.03
  5. Step 5: Solve for x
    x = 81,650,046,920.03/330,125.76
  6. Step 6: Final answer
    x = 247,330.13

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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.