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Finding the Fourth Proportional to 291,198.63, 401,792.11 and 170,316.32

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Solution

The fourth proportional to 291,198.63, 401,792.11 and 170,316.32 is: 235,000.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,198.63 : 401,792.11 = 170,316.32 : x
  2. Step 2: Convert to fraction form
    291,198.63/401,792.11 = 170,316.32/x
  3. Step 3: Cross multiply
    291,198.63x = 401,792.11 × 170,316.32
  4. Step 4: Simplify right side
    291,198.63x = 68,431,754,158.92
  5. Step 5: Solve for x
    x = 68,431,754,158.92/291,198.63
  6. Step 6: Final answer
    x = 235,000.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.