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Finding the Fourth Proportional to 505,615.73, 697,753.32 and 279,261.23

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Solution

The fourth proportional to 505,615.73, 697,753.32 and 279,261.23 is: 385,382.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,615.73 : 697,753.32 = 279,261.23 : x
  2. Step 2: Convert to fraction form
    505,615.73/697,753.32 = 279,261.23/x
  3. Step 3: Cross multiply
    505,615.73x = 697,753.32 × 279,261.23
  4. Step 4: Simplify right side
    505,615.73x = 194,855,450,379.78
  5. Step 5: Solve for x
    x = 194,855,450,379.78/505,615.73
  6. Step 6: Final answer
    x = 385,382.49

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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.