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Finding the Fourth Proportional to 383,313.60, 535,939.20 and 383,313.60

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Solution

The fourth proportional to 383,313.60, 535,939.20 and 383,313.60 is: 535,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,313.60 : 535,939.20 = 383,313.60 : x
  2. Step 2: Convert to fraction form
    383,313.60/535,939.20 = 383,313.60/x
  3. Step 3: Cross multiply
    383,313.60x = 535,939.20 × 383,313.60
  4. Step 4: Simplify right side
    383,313.60x = 205,432,784,133.12
  5. Step 5: Solve for x
    x = 205,432,784,133.12/383,313.60
  6. Step 6: Final answer
    x = 535,939.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.