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Finding the Fourth Proportional to 619,838.23, 855,311.05 and 347,936.04

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Solution

The fourth proportional to 619,838.23, 855,311.05 and 347,936.04 is: 480,114.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,838.23 : 855,311.05 = 347,936.04 : x
  2. Step 2: Convert to fraction form
    619,838.23/855,311.05 = 347,936.04/x
  3. Step 3: Cross multiply
    619,838.23x = 855,311.05 × 347,936.04
  4. Step 4: Simplify right side
    619,838.23x = 297,593,533,689.01
  5. Step 5: Solve for x
    x = 297,593,533,689.01/619,838.23
  6. Step 6: Final answer
    x = 480,114.84

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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.