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Finding the Fourth Proportional to 630,156.10, 945,234.15 and 621,861.70

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Solution

The fourth proportional to 630,156.10, 945,234.15 and 621,861.70 is: 932,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,156.10 : 945,234.15 = 621,861.70 : x
  2. Step 2: Convert to fraction form
    630,156.10/945,234.15 = 621,861.70/x
  3. Step 3: Cross multiply
    630,156.10x = 945,234.15 × 621,861.70
  4. Step 4: Simplify right side
    630,156.10x = 587,804,915,417.06
  5. Step 5: Solve for x
    x = 587,804,915,417.06/630,156.10
  6. Step 6: Final answer
    x = 932,792.55

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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.