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Finding the Fourth Proportional to 505,410.24, 697,457.76 and 279,049.92

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Solution

The fourth proportional to 505,410.24, 697,457.76 and 279,049.92 is: 385,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,410.24 : 697,457.76 = 279,049.92 : x
  2. Step 2: Convert to fraction form
    505,410.24/697,457.76 = 279,049.92/x
  3. Step 3: Cross multiply
    505,410.24x = 697,457.76 × 279,049.92
  4. Step 4: Simplify right side
    505,410.24x = 194,625,532,131.38
  5. Step 5: Solve for x
    x = 194,625,532,131.38/505,410.24
  6. Step 6: Final answer
    x = 385,084.27

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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.