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Finding the Fourth Proportional to 389,414.10, 584,121.15 and 167,798.10

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Solution

The fourth proportional to 389,414.10, 584,121.15 and 167,798.10 is: 251,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,414.10 : 584,121.15 = 167,798.10 : x
  2. Step 2: Convert to fraction form
    389,414.10/584,121.15 = 167,798.10/x
  3. Step 3: Cross multiply
    389,414.10x = 584,121.15 × 167,798.10
  4. Step 4: Simplify right side
    389,414.10x = 98,014,419,139.82
  5. Step 5: Solve for x
    x = 98,014,419,139.82/389,414.10
  6. Step 6: Final answer
    x = 251,697.15

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1.5x scale

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.