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Finding the Fourth Proportional to 505,453.68, 697,562.82 and 290,661.12

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Solution

The fourth proportional to 505,453.68, 697,562.82 and 290,661.12 is: 401,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,453.68 : 697,562.82 = 290,661.12 : x
  2. Step 2: Convert to fraction form
    505,453.68/697,562.82 = 290,661.12/x
  3. Step 3: Cross multiply
    505,453.68x = 697,562.82 × 290,661.12
  4. Step 4: Simplify right side
    505,453.68x = 202,754,390,531.56
  5. Step 5: Solve for x
    x = 202,754,390,531.56/505,453.68
  6. Step 6: Final answer
    x = 401,133.47

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Double scale
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Similar ratio
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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.