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Finding the Fourth Proportional to 383,800.80, 529,861.52 and 266,140.20

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Solution

The fourth proportional to 383,800.80, 529,861.52 and 266,140.20 is: 367,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,800.80 : 529,861.52 = 266,140.20 : x
  2. Step 2: Convert to fraction form
    383,800.80/529,861.52 = 266,140.20/x
  3. Step 3: Cross multiply
    383,800.80x = 529,861.52 × 266,140.20
  4. Step 4: Simplify right side
    383,800.80x = 141,017,450,905.10
  5. Step 5: Solve for x
    x = 141,017,450,905.10/383,800.80
  6. Step 6: Final answer
    x = 367,423.55

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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.