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Finding the Fourth Proportional to 505,389.14, 697,431.71 and 275,945.71

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Solution

The fourth proportional to 505,389.14, 697,431.71 and 275,945.71 is: 380,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,389.14 : 697,431.71 = 275,945.71 : x
  2. Step 2: Convert to fraction form
    505,389.14/697,431.71 = 275,945.71/x
  3. Step 3: Cross multiply
    505,389.14x = 697,431.71 × 275,945.71
  4. Step 4: Simplify right side
    505,389.14x = 192,453,285,269.16
  5. Step 5: Solve for x
    x = 192,453,285,269.16/505,389.14
  6. Step 6: Final answer
    x = 380,802.18

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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.