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Finding the Fourth Proportional to 619,661.09, 929,491.65 and 199,232.21

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Solution

The fourth proportional to 619,661.09, 929,491.65 and 199,232.21 is: 298,848.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,661.09 : 929,491.65 = 199,232.21 : x
  2. Step 2: Convert to fraction form
    619,661.09/929,491.65 = 199,232.21/x
  3. Step 3: Cross multiply
    619,661.09x = 929,491.65 × 199,232.21
  4. Step 4: Simplify right side
    619,661.09x = 185,184,670,958.59
  5. Step 5: Solve for x
    x = 185,184,670,958.59/619,661.09
  6. Step 6: Final answer
    x = 298,848.31

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.