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Finding the Fourth Proportional to 383,884.60, 575,931.52 and 117,639.22

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Solution

The fourth proportional to 383,884.60, 575,931.52 and 117,639.22 is: 176,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,884.60 : 575,931.52 = 117,639.22 : x
  2. Step 2: Convert to fraction form
    383,884.60/575,931.52 = 117,639.22/x
  3. Step 3: Cross multiply
    383,884.60x = 575,931.52 × 117,639.22
  4. Step 4: Simplify right side
    383,884.60x = 67,752,134,786.21
  5. Step 5: Solve for x
    x = 67,752,134,786.21/383,884.60
  6. Step 6: Final answer
    x = 176,490.89

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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.