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Finding the Fourth Proportional to 413,190.30, 619,785.45 and 413,190.30

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Solution

The fourth proportional to 413,190.30, 619,785.45 and 413,190.30 is: 619,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,190.30 : 619,785.45 = 413,190.30 : x
  2. Step 2: Convert to fraction form
    413,190.30/619,785.45 = 413,190.30/x
  3. Step 3: Cross multiply
    413,190.30x = 619,785.45 × 413,190.30
  4. Step 4: Simplify right side
    413,190.30x = 256,089,336,021.14
  5. Step 5: Solve for x
    x = 256,089,336,021.14/413,190.30
  6. Step 6: Final answer
    x = 619,785.45

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Similar ratio
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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.