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Finding the Fourth Proportional to 358,082.64, 536,640.12 and 136,345.68

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Solution

The fourth proportional to 358,082.64, 536,640.12 and 136,345.68 is: 204,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,082.64 : 536,640.12 = 136,345.68 : x
  2. Step 2: Convert to fraction form
    358,082.64/536,640.12 = 136,345.68/x
  3. Step 3: Cross multiply
    358,082.64x = 536,640.12 × 136,345.68
  4. Step 4: Simplify right side
    358,082.64x = 73,168,562,076.68
  5. Step 5: Solve for x
    x = 73,168,562,076.68/358,082.64
  6. Step 6: Final answer
    x = 204,334.29

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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.