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Finding the Fourth Proportional to 381,630,331.90, 572,445,497.85 and 381,630,331.90

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Solution

The fourth proportional to 381,630,331.90, 572,445,497.85 and 381,630,331.90 is: 572,445,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,630,331.90 : 572,445,497.85 = 381,630,331.90 : x
  2. Step 2: Convert to fraction form
    381,630,331.90/572,445,497.85 = 381,630,331.90/x
  3. Step 3: Cross multiply
    381,630,331.90x = 572,445,497.85 × 381,630,331.90
  4. Step 4: Simplify right side
    381,630,331.90x = 218,462,565,339,156,224
  5. Step 5: Solve for x
    x = 218,462,565,339,156,224/381,630,331.90
  6. Step 6: Final answer
    x = 572,445,497.85

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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.