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Finding the Fourth Proportional to 505,434.89, 697,496.72 and 279,080.39

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Solution

The fourth proportional to 505,434.89, 697,496.72 and 279,080.39 is: 385,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,434.89 : 697,496.72 = 279,080.39 : x
  2. Step 2: Convert to fraction form
    505,434.89/697,496.72 = 279,080.39/x
  3. Step 3: Cross multiply
    505,434.89x = 697,496.72 × 279,080.39
  4. Step 4: Simplify right side
    505,434.89x = 194,657,651,758.44
  5. Step 5: Solve for x
    x = 194,657,651,758.44/505,434.89
  6. Step 6: Final answer
    x = 385,129.04

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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.