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Finding the Fourth Proportional to 505,680.68, 697,839.30 and 279,326.18

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Solution

The fourth proportional to 505,680.68, 697,839.30 and 279,326.18 is: 385,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,680.68 : 697,839.30 = 279,326.18 : x
  2. Step 2: Convert to fraction form
    505,680.68/697,839.30 = 279,326.18/x
  3. Step 3: Cross multiply
    505,680.68x = 697,839.30 × 279,326.18
  4. Step 4: Simplify right side
    505,680.68x = 194,924,782,433.68
  5. Step 5: Solve for x
    x = 194,924,782,433.68/505,680.68
  6. Step 6: Final answer
    x = 385,470.10

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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.