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Finding the Fourth Proportional to 619,643.10, 929,464.65 and 582,318.30

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Solution

The fourth proportional to 619,643.10, 929,464.65 and 582,318.30 is: 873,477.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,643.10 : 929,464.65 = 582,318.30 : x
  2. Step 2: Convert to fraction form
    619,643.10/929,464.65 = 582,318.30/x
  3. Step 3: Cross multiply
    619,643.10x = 929,464.65 × 582,318.30
  4. Step 4: Simplify right side
    619,643.10x = 541,244,274,898.10
  5. Step 5: Solve for x
    x = 541,244,274,898.10/619,643.10
  6. Step 6: Final answer
    x = 873,477.45

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Half scale
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Double scale
Find fourth proportional to 619,644.10, 929,466.15 and 582,319.30
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.