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Finding the Fourth Proportional to 211,188.99, 291,448.22 and 115,695.68

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Solution

The fourth proportional to 211,188.99, 291,448.22 and 115,695.68 is: 159,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,188.99 : 291,448.22 = 115,695.68 : x
  2. Step 2: Convert to fraction form
    211,188.99/291,448.22 = 115,695.68/x
  3. Step 3: Cross multiply
    211,188.99x = 291,448.22 × 115,695.68
  4. Step 4: Simplify right side
    211,188.99x = 33,719,299,997.69
  5. Step 5: Solve for x
    x = 33,719,299,997.69/211,188.99
  6. Step 6: Final answer
    x = 159,664.10

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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.