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Finding the Fourth Proportional to 609,861.96, 841,621.67 and 355,229.55

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Solution

The fourth proportional to 609,861.96, 841,621.67 and 355,229.55 is: 490,223.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,861.96 : 841,621.67 = 355,229.55 : x
  2. Step 2: Convert to fraction form
    609,861.96/841,621.67 = 355,229.55/x
  3. Step 3: Cross multiply
    609,861.96x = 841,621.67 × 355,229.55
  4. Step 4: Simplify right side
    609,861.96x = 298,968,885,328.20
  5. Step 5: Solve for x
    x = 298,968,885,328.20/609,861.96
  6. Step 6: Final answer
    x = 490,223.86

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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.