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Finding the Fourth Proportional to 619,451.02, 855,009.57 and 404,586.46

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Solution

The fourth proportional to 619,451.02, 855,009.57 and 404,586.46 is: 558,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,451.02 : 855,009.57 = 404,586.46 : x
  2. Step 2: Convert to fraction form
    619,451.02/855,009.57 = 404,586.46/x
  3. Step 3: Cross multiply
    619,451.02x = 855,009.57 × 404,586.46
  4. Step 4: Simplify right side
    619,451.02x = 345,925,295,192.42
  5. Step 5: Solve for x
    x = 345,925,295,192.42/619,451.02
  6. Step 6: Final answer
    x = 558,438.49

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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.