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Finding the Fourth Proportional to 383,812.32, 530,074.08 and 292,190.88

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Solution

The fourth proportional to 383,812.32, 530,074.08 and 292,190.88 is: 403,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,812.32 : 530,074.08 = 292,190.88 : x
  2. Step 2: Convert to fraction form
    383,812.32/530,074.08 = 292,190.88/x
  3. Step 3: Cross multiply
    383,812.32x = 530,074.08 × 292,190.88
  4. Step 4: Simplify right side
    383,812.32x = 154,882,811,900.39
  5. Step 5: Solve for x
    x = 154,882,811,900.39/383,812.32
  6. Step 6: Final answer
    x = 403,537.89

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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.