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Finding the Fourth Proportional to 443,506.56, 665,733.60 and 190,912.20

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Solution

The fourth proportional to 443,506.56, 665,733.60 and 190,912.20 is: 286,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,506.56 : 665,733.60 = 190,912.20 : x
  2. Step 2: Convert to fraction form
    443,506.56/665,733.60 = 190,912.20/x
  3. Step 3: Cross multiply
    443,506.56x = 665,733.60 × 190,912.20
  4. Step 4: Simplify right side
    443,506.56x = 127,096,666,189.92
  5. Step 5: Solve for x
    x = 127,096,666,189.92/443,506.56
  6. Step 6: Final answer
    x = 286,572.24

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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.