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Finding the Fourth Proportional to 505,498.68, 697,585.50 and 279,144.12

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Solution

The fourth proportional to 505,498.68, 697,585.50 and 279,144.12 is: 385,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,498.68 : 697,585.50 = 279,144.12 : x
  2. Step 2: Convert to fraction form
    505,498.68/697,585.50 = 279,144.12/x
  3. Step 3: Cross multiply
    505,498.68x = 697,585.50 × 279,144.12
  4. Step 4: Simplify right side
    505,498.68x = 194,726,890,522.26
  5. Step 5: Solve for x
    x = 194,726,890,522.26/505,498.68
  6. Step 6: Final answer
    x = 385,217.41

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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.