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Finding the Fourth Proportional to 383,406.50, 529,140.34 and 230,494.19

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Solution

The fourth proportional to 383,406.50, 529,140.34 and 230,494.19 is: 318,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,406.50 : 529,140.34 = 230,494.19 : x
  2. Step 2: Convert to fraction form
    383,406.50/529,140.34 = 230,494.19/x
  3. Step 3: Cross multiply
    383,406.50x = 529,140.34 × 230,494.19
  4. Step 4: Simplify right side
    383,406.50x = 121,963,774,896.43
  5. Step 5: Solve for x
    x = 121,963,774,896.43/383,406.50
  6. Step 6: Final answer
    x = 318,105.65

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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.