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Finding the Fourth Proportional to 800,014.80, 1,196,911.80 and 520,078.80

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Solution

The fourth proportional to 800,014.80, 1,196,911.80 and 520,078.80 is: 778,096.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,014.80 : 1,196,911.80 = 520,078.80 : x
  2. Step 2: Convert to fraction form
    800,014.80/1,196,911.80 = 520,078.80/x
  3. Step 3: Cross multiply
    800,014.80x = 1,196,911.80 × 520,078.80
  4. Step 4: Simplify right side
    800,014.80x = 622,488,452,649.84
  5. Step 5: Solve for x
    x = 622,488,452,649.84/800,014.80
  6. Step 6: Final answer
    x = 778,096.17

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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.