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Finding the Fourth Proportional to 505,441.77, 697,538.11 and 276,020.40

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Solution

The fourth proportional to 505,441.77, 697,538.11 and 276,020.40 is: 380,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,441.77 : 697,538.11 = 276,020.40 : x
  2. Step 2: Convert to fraction form
    505,441.77/697,538.11 = 276,020.40/x
  3. Step 3: Cross multiply
    505,441.77x = 697,538.11 × 276,020.40
  4. Step 4: Simplify right side
    505,441.77x = 192,534,748,137.44
  5. Step 5: Solve for x
    x = 192,534,748,137.44/505,441.77
  6. Step 6: Final answer
    x = 380,923.70

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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.