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Finding the Fourth Proportional to 505,750.39, 697,876.04 and 279,382.39

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Solution

The fourth proportional to 505,750.39, 697,876.04 and 279,382.39 is: 385,514.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,750.39 : 697,876.04 = 279,382.39 : x
  2. Step 2: Convert to fraction form
    505,750.39/697,876.04 = 279,382.39/x
  3. Step 3: Cross multiply
    505,750.39x = 697,876.04 × 279,382.39
  4. Step 4: Simplify right side
    505,750.39x = 194,974,274,582.02
  5. Step 5: Solve for x
    x = 194,974,274,582.02/505,750.39
  6. Step 6: Final answer
    x = 385,514.83

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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.