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Finding the Fourth Proportional to 316,782.70, 437,156.62 and 171,584.88

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Solution

The fourth proportional to 316,782.70, 437,156.62 and 171,584.88 is: 236,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,782.70 : 437,156.62 = 171,584.88 : x
  2. Step 2: Convert to fraction form
    316,782.70/437,156.62 = 171,584.88/x
  3. Step 3: Cross multiply
    316,782.70x = 437,156.62 × 171,584.88
  4. Step 4: Simplify right side
    316,782.70x = 75,009,467,057.19
  5. Step 5: Solve for x
    x = 75,009,467,057.19/316,782.70
  6. Step 6: Final answer
    x = 236,785.24

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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.