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Finding the Fourth Proportional to 619,400.93, 928,317.51 and 353,311.07

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Solution

The fourth proportional to 619,400.93, 928,317.51 and 353,311.07 is: 529,519.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,400.93 : 928,317.51 = 353,311.07 : x
  2. Step 2: Convert to fraction form
    619,400.93/928,317.51 = 353,311.07/x
  3. Step 3: Cross multiply
    619,400.93x = 928,317.51 × 353,311.07
  4. Step 4: Simplify right side
    619,400.93x = 327,984,848,116.25
  5. Step 5: Solve for x
    x = 327,984,848,116.25/619,400.93
  6. Step 6: Final answer
    x = 529,519.47

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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.