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Finding the Fourth Proportional to 320,015.34, 441,602.87 and 191,099.30

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Solution

The fourth proportional to 320,015.34, 441,602.87 and 191,099.30 is: 263,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,015.34 : 441,602.87 = 191,099.30 : x
  2. Step 2: Convert to fraction form
    320,015.34/441,602.87 = 191,099.30/x
  3. Step 3: Cross multiply
    320,015.34x = 441,602.87 × 191,099.30
  4. Step 4: Simplify right side
    320,015.34x = 84,389,996,171.48
  5. Step 5: Solve for x
    x = 84,389,996,171.48/320,015.34
  6. Step 6: Final answer
    x = 263,706.10

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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.