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Finding the Fourth Proportional to 383,424.55, 529,123.25 and 211,342.66

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Solution

The fourth proportional to 383,424.55, 529,123.25 and 211,342.66 is: 291,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,424.55 : 529,123.25 = 211,342.66 : x
  2. Step 2: Convert to fraction form
    383,424.55/529,123.25 = 211,342.66/x
  3. Step 3: Cross multiply
    383,424.55x = 529,123.25 × 211,342.66
  4. Step 4: Simplify right side
    383,424.55x = 111,826,314,066.13
  5. Step 5: Solve for x
    x = 111,826,314,066.13/383,424.55
  6. Step 6: Final answer
    x = 291,651.42

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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.