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Finding the Fourth Proportional to 316,335.47, 436,542.45 and 173,095.47

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Solution

The fourth proportional to 316,335.47, 436,542.45 and 173,095.47 is: 238,871.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,335.47 : 436,542.45 = 173,095.47 : x
  2. Step 2: Convert to fraction form
    316,335.47/436,542.45 = 173,095.47/x
  3. Step 3: Cross multiply
    316,335.47x = 436,542.45 × 173,095.47
  4. Step 4: Simplify right side
    316,335.47x = 75,563,520,557.70
  5. Step 5: Solve for x
    x = 75,563,520,557.70/316,335.47
  6. Step 6: Final answer
    x = 238,871.48

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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.