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Finding the Fourth Proportional to 619,643.10, 929,464.65 and 383,252.70

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Solution

The fourth proportional to 619,643.10, 929,464.65 and 383,252.70 is: 574,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,643.10 : 929,464.65 = 383,252.70 : x
  2. Step 2: Convert to fraction form
    619,643.10/929,464.65 = 383,252.70/x
  3. Step 3: Cross multiply
    619,643.10x = 929,464.65 × 383,252.70
  4. Step 4: Simplify right side
    619,643.10x = 356,219,836,667.06
  5. Step 5: Solve for x
    x = 356,219,836,667.06/619,643.10
  6. Step 6: Final answer
    x = 574,879.05

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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.