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Finding the Fourth Proportional to 336,785.36, 505,258.47 and 112,147.74

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Solution

The fourth proportional to 336,785.36, 505,258.47 and 112,147.74 is: 168,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,785.36 : 505,258.47 = 112,147.74 : x
  2. Step 2: Convert to fraction form
    336,785.36/505,258.47 = 112,147.74/x
  3. Step 3: Cross multiply
    336,785.36x = 505,258.47 × 112,147.74
  4. Step 4: Simplify right side
    336,785.36x = 56,663,594,965.62
  5. Step 5: Solve for x
    x = 56,663,594,965.62/336,785.36
  6. Step 6: Final answer
    x = 168,248.39

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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.