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Finding the Fourth Proportional to 443,102.66, 609,942.30 and 386,415.62

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Solution

The fourth proportional to 443,102.66, 609,942.30 and 386,415.62 is: 531,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,102.66 : 609,942.30 = 386,415.62 : x
  2. Step 2: Convert to fraction form
    443,102.66/609,942.30 = 386,415.62/x
  3. Step 3: Cross multiply
    443,102.66x = 609,942.30 × 386,415.62
  4. Step 4: Simplify right side
    443,102.66x = 235,691,232,018.73
  5. Step 5: Solve for x
    x = 235,691,232,018.73/443,102.66
  6. Step 6: Final answer
    x = 531,911.12

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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.