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Finding the Fourth Proportional to 443,342.70, 665,100.45 and 190,622.70

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Solution

The fourth proportional to 443,342.70, 665,100.45 and 190,622.70 is: 285,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,342.70 : 665,100.45 = 190,622.70 : x
  2. Step 2: Convert to fraction form
    443,342.70/665,100.45 = 190,622.70/x
  3. Step 3: Cross multiply
    443,342.70x = 665,100.45 × 190,622.70
  4. Step 4: Simplify right side
    443,342.70x = 126,783,243,550.22
  5. Step 5: Solve for x
    x = 126,783,243,550.22/443,342.70
  6. Step 6: Final answer
    x = 285,971.20

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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.