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Finding the Fourth Proportional to 211,168.00, 291,411.89 and 115,678.09

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Solution

The fourth proportional to 211,168.00, 291,411.89 and 115,678.09 is: 159,635.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,168.00 : 291,411.89 = 115,678.09 : x
  2. Step 2: Convert to fraction form
    211,168.00/291,411.89 = 115,678.09/x
  3. Step 3: Cross multiply
    211,168.00x = 291,411.89 × 115,678.09
  4. Step 4: Simplify right side
    211,168.00x = 33,709,969,965.36
  5. Step 5: Solve for x
    x = 33,709,969,965.36/211,168.00
  6. Step 6: Final answer
    x = 159,635.79

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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.