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Finding the Fourth Proportional to 316,909.97, 437,335.76 and 173,673.32

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Solution

The fourth proportional to 316,909.97, 437,335.76 and 173,673.32 is: 239,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,909.97 : 437,335.76 = 173,673.32 : x
  2. Step 2: Convert to fraction form
    316,909.97/437,335.76 = 173,673.32/x
  3. Step 3: Cross multiply
    316,909.97x = 437,335.76 × 173,673.32
  4. Step 4: Simplify right side
    316,909.97x = 75,953,550,664.52
  5. Step 5: Solve for x
    x = 75,953,550,664.52/316,909.97
  6. Step 6: Final answer
    x = 239,669.17

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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.