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Finding the Fourth Proportional to 473,137.80, 709,706.70 and 305,176.20

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Solution

The fourth proportional to 473,137.80, 709,706.70 and 305,176.20 is: 457,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,137.80 : 709,706.70 = 305,176.20 : x
  2. Step 2: Convert to fraction form
    473,137.80/709,706.70 = 305,176.20/x
  3. Step 3: Cross multiply
    473,137.80x = 709,706.70 × 305,176.20
  4. Step 4: Simplify right side
    473,137.80x = 216,585,593,820.54
  5. Step 5: Solve for x
    x = 216,585,593,820.54/473,137.80
  6. Step 6: Final answer
    x = 457,764.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.