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Finding the Fourth Proportional to 606,911.70, 909,383.40 and 381,869.40

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Solution

The fourth proportional to 606,911.70, 909,383.40 and 381,869.40 is: 572,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,911.70 : 909,383.40 = 381,869.40 : x
  2. Step 2: Convert to fraction form
    606,911.70/909,383.40 = 381,869.40/x
  3. Step 3: Cross multiply
    606,911.70x = 909,383.40 × 381,869.40
  4. Step 4: Simplify right side
    606,911.70x = 347,265,693,327.96
  5. Step 5: Solve for x
    x = 347,265,693,327.96/606,911.70
  6. Step 6: Final answer
    x = 572,184.87

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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.