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Finding the Fourth Proportional to 627,686.76, 866,208.36 and 341,206.86

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Solution

The fourth proportional to 627,686.76, 866,208.36 and 341,206.86 is: 470,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,686.76 : 866,208.36 = 341,206.86 : x
  2. Step 2: Convert to fraction form
    627,686.76/866,208.36 = 341,206.86/x
  3. Step 3: Cross multiply
    627,686.76x = 866,208.36 × 341,206.86
  4. Step 4: Simplify right side
    627,686.76x = 295,556,234,621.35
  5. Step 5: Solve for x
    x = 295,556,234,621.35/627,686.76
  6. Step 6: Final answer
    x = 470,865.81

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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.