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Finding the Fourth Proportional to 505,415.27, 697,470.29 and 275,970.92

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Solution

The fourth proportional to 505,415.27, 697,470.29 and 275,970.92 is: 380,838.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,415.27 : 697,470.29 = 275,970.92 : x
  2. Step 2: Convert to fraction form
    505,415.27/697,470.29 = 275,970.92/x
  3. Step 3: Cross multiply
    505,415.27x = 697,470.29 × 275,970.92
  4. Step 4: Simplify right side
    505,415.27x = 192,481,519,002.68
  5. Step 5: Solve for x
    x = 192,481,519,002.68/505,415.27
  6. Step 6: Final answer
    x = 380,838.36

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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.