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Finding the Fourth Proportional to 316,783.43, 437,172.06 and 173,543.43

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Solution

The fourth proportional to 316,783.43, 437,172.06 and 173,543.43 is: 239,495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,783.43 : 437,172.06 = 173,543.43 : x
  2. Step 2: Convert to fraction form
    316,783.43/437,172.06 = 173,543.43/x
  3. Step 3: Cross multiply
    316,783.43x = 437,172.06 × 173,543.43
  4. Step 4: Simplify right side
    316,783.43x = 75,868,338,792.57
  5. Step 5: Solve for x
    x = 75,868,338,792.57/316,783.43
  6. Step 6: Final answer
    x = 239,495.92

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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.