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Finding the Fourth Proportional to 505,620.79, 697,752.08 and 276,178.04

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Solution

The fourth proportional to 505,620.79, 697,752.08 and 276,178.04 is: 381,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,620.79 : 697,752.08 = 276,178.04 : x
  2. Step 2: Convert to fraction form
    505,620.79/697,752.08 = 276,178.04/x
  3. Step 3: Cross multiply
    505,620.79x = 697,752.08 × 276,178.04
  4. Step 4: Simplify right side
    505,620.79x = 192,703,803,780.74
  5. Step 5: Solve for x
    x = 192,703,803,780.74/505,620.79
  6. Step 6: Final answer
    x = 381,123.18

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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.