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Finding the Fourth Proportional to 279,903.72, 419,777.52 and 77,451.06

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Solution

The fourth proportional to 279,903.72, 419,777.52 and 77,451.06 is: 116,154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,903.72 : 419,777.52 = 77,451.06 : x
  2. Step 2: Convert to fraction form
    279,903.72/419,777.52 = 77,451.06/x
  3. Step 3: Cross multiply
    279,903.72x = 419,777.52 × 77,451.06
  4. Step 4: Simplify right side
    279,903.72x = 32,512,213,888.17
  5. Step 5: Solve for x
    x = 32,512,213,888.17/279,903.72
  6. Step 6: Final answer
    x = 116,154.99

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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.