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Finding the Fourth Proportional to 311,958.80, 430,556.08 and 176,031.29

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Solution

The fourth proportional to 311,958.80, 430,556.08 and 176,031.29 is: 242,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,958.80 : 430,556.08 = 176,031.29 : x
  2. Step 2: Convert to fraction form
    311,958.80/430,556.08 = 176,031.29/x
  3. Step 3: Cross multiply
    311,958.80x = 430,556.08 × 176,031.29
  4. Step 4: Simplify right side
    311,958.80x = 75,791,342,179.74
  5. Step 5: Solve for x
    x = 75,791,342,179.74/311,958.80
  6. Step 6: Final answer
    x = 242,953.05

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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.