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Finding the Fourth Proportional to 383,406.16, 575,110.60 and 117,165.56

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Solution

The fourth proportional to 383,406.16, 575,110.60 and 117,165.56 is: 175,748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,406.16 : 575,110.60 = 117,165.56 : x
  2. Step 2: Convert to fraction form
    383,406.16/575,110.60 = 117,165.56/x
  3. Step 3: Cross multiply
    383,406.16x = 575,110.60 × 117,165.56
  4. Step 4: Simplify right side
    383,406.16x = 67,383,155,510.94
  5. Step 5: Solve for x
    x = 67,383,155,510.94/383,406.16
  6. Step 6: Final answer
    x = 175,748.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.