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Finding the Fourth Proportional to 279,039.40, 419,595.90 and 233,420.20

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Solution

The fourth proportional to 279,039.40, 419,595.90 and 233,420.20 is: 350,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,039.40 : 419,595.90 = 233,420.20 : x
  2. Step 2: Convert to fraction form
    279,039.40/419,595.90 = 233,420.20/x
  3. Step 3: Cross multiply
    279,039.40x = 419,595.90 × 233,420.20
  4. Step 4: Simplify right side
    279,039.40x = 97,942,158,897.18
  5. Step 5: Solve for x
    x = 97,942,158,897.18/279,039.40
  6. Step 6: Final answer
    x = 350,997.60

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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.