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Finding the Fourth Proportional to 279,715.97, 386,035.91 and 170,814.30

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Solution

The fourth proportional to 279,715.97, 386,035.91 and 170,814.30 is: 235,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,715.97 : 386,035.91 = 170,814.30 : x
  2. Step 2: Convert to fraction form
    279,715.97/386,035.91 = 170,814.30/x
  3. Step 3: Cross multiply
    279,715.97x = 386,035.91 × 170,814.30
  4. Step 4: Simplify right side
    279,715.97x = 65,940,453,741.51
  5. Step 5: Solve for x
    x = 65,940,453,741.51/279,715.97
  6. Step 6: Final answer
    x = 235,740.75

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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.