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Finding the Fourth Proportional to 631,564.80, 871,945.56 and 411,012.24

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Solution

The fourth proportional to 631,564.80, 871,945.56 and 411,012.24 is: 567,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,564.80 : 871,945.56 = 411,012.24 : x
  2. Step 2: Convert to fraction form
    631,564.80/871,945.56 = 411,012.24/x
  3. Step 3: Cross multiply
    631,564.80x = 871,945.56 × 411,012.24
  4. Step 4: Simplify right side
    631,564.80x = 358,380,297,773.65
  5. Step 5: Solve for x
    x = 358,380,297,773.65/631,564.80
  6. Step 6: Final answer
    x = 567,448.18

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Double scale
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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.