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Finding the Fourth Proportional to 614,782.40, 921,189.45 and 404,174.30

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Solution

The fourth proportional to 614,782.40, 921,189.45 and 404,174.30 is: 605,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,782.40 : 921,189.45 = 404,174.30 : x
  2. Step 2: Convert to fraction form
    614,782.40/921,189.45 = 404,174.30/x
  3. Step 3: Cross multiply
    614,782.40x = 921,189.45 × 404,174.30
  4. Step 4: Simplify right side
    614,782.40x = 372,321,101,121.14
  5. Step 5: Solve for x
    x = 372,321,101,121.14/614,782.40
  6. Step 6: Final answer
    x = 605,614.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.