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Finding the Fourth Proportional to 579,234.90, 869,111.55 and 263,529.30

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Solution

The fourth proportional to 579,234.90, 869,111.55 and 263,529.30 is: 395,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,234.90 : 869,111.55 = 263,529.30 : x
  2. Step 2: Convert to fraction form
    579,234.90/869,111.55 = 263,529.30/x
  3. Step 3: Cross multiply
    579,234.90x = 869,111.55 × 263,529.30
  4. Step 4: Simplify right side
    579,234.90x = 229,036,358,393.42
  5. Step 5: Solve for x
    x = 229,036,358,393.42/579,234.90
  6. Step 6: Final answer
    x = 395,411.88

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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.