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Finding the Fourth Proportional to 530,183.88, 731,702.36 and 300,815.78

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Solution

The fourth proportional to 530,183.88, 731,702.36 and 300,815.78 is: 415,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,183.88 : 731,702.36 = 300,815.78 : x
  2. Step 2: Convert to fraction form
    530,183.88/731,702.36 = 300,815.78/x
  3. Step 3: Cross multiply
    530,183.88x = 731,702.36 × 300,815.78
  4. Step 4: Simplify right side
    530,183.88x = 220,107,613,244.77
  5. Step 5: Solve for x
    x = 220,107,613,244.77/530,183.88
  6. Step 6: Final answer
    x = 415,153.35

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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.