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Finding the Fourth Proportional to 668,226.72, 921,260.77 and 530,861.43

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Solution

The fourth proportional to 668,226.72, 921,260.77 and 530,861.43 is: 731,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,226.72 : 921,260.77 = 530,861.43 : x
  2. Step 2: Convert to fraction form
    668,226.72/921,260.77 = 530,861.43/x
  3. Step 3: Cross multiply
    668,226.72x = 921,260.77 × 530,861.43
  4. Step 4: Simplify right side
    668,226.72x = 489,061,809,765.10
  5. Step 5: Solve for x
    x = 489,061,809,765.10/668,226.72
  6. Step 6: Final answer
    x = 731,880.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.