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Finding the Fourth Proportional to 656,152.11, 905,489.90 and 354,346.11

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Solution

The fourth proportional to 656,152.11, 905,489.90 and 354,346.11 is: 488,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,152.11 : 905,489.90 = 354,346.11 : x
  2. Step 2: Convert to fraction form
    656,152.11/905,489.90 = 354,346.11/x
  3. Step 3: Cross multiply
    656,152.11x = 905,489.90 × 354,346.11
  4. Step 4: Simplify right side
    656,152.11x = 320,856,825,259.55
  5. Step 5: Solve for x
    x = 320,856,825,259.55/656,152.11
  6. Step 6: Final answer
    x = 488,997.63

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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.