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Finding the Fourth Proportional to 514,036.20, 770,708.70 and 274,189.80

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Solution

The fourth proportional to 514,036.20, 770,708.70 and 274,189.80 is: 411,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,036.20 : 770,708.70 = 274,189.80 : x
  2. Step 2: Convert to fraction form
    514,036.20/770,708.70 = 274,189.80/x
  3. Step 3: Cross multiply
    514,036.20x = 770,708.70 × 274,189.80
  4. Step 4: Simplify right side
    514,036.20x = 211,320,464,311.26
  5. Step 5: Solve for x
    x = 211,320,464,311.26/514,036.20
  6. Step 6: Final answer
    x = 411,100.36

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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.