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Finding the Fourth Proportional to 505,577.61, 697,692.83 and 279,218.25

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Solution

The fourth proportional to 505,577.61, 697,692.83 and 279,218.25 is: 385,318.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,577.61 : 697,692.83 = 279,218.25 : x
  2. Step 2: Convert to fraction form
    505,577.61/697,692.83 = 279,218.25/x
  3. Step 3: Cross multiply
    505,577.61x = 697,692.83 × 279,218.25
  4. Step 4: Simplify right side
    505,577.61x = 194,808,569,634.06
  5. Step 5: Solve for x
    x = 194,808,569,634.06/505,577.61
  6. Step 6: Final answer
    x = 385,318.82

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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.