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Finding the Fourth Proportional to 505,754.88, 697,950.72 and 279,386.88

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Solution

The fourth proportional to 505,754.88, 697,950.72 and 279,386.88 is: 385,558.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,754.88 : 697,950.72 = 279,386.88 : x
  2. Step 2: Convert to fraction form
    505,754.88/697,950.72 = 279,386.88/x
  3. Step 3: Cross multiply
    505,754.88x = 697,950.72 × 279,386.88
  4. Step 4: Simplify right side
    505,754.88x = 194,998,274,054.55
  5. Step 5: Solve for x
    x = 194,998,274,054.55/505,754.88
  6. Step 6: Final answer
    x = 385,558.86

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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.