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Finding the Fourth Proportional to 316,947.66, 437,386.90 and 171,757.45

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Solution

The fourth proportional to 316,947.66, 437,386.90 and 171,757.45 is: 237,024.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,947.66 : 437,386.90 = 171,757.45 : x
  2. Step 2: Convert to fraction form
    316,947.66/437,386.90 = 171,757.45/x
  3. Step 3: Cross multiply
    316,947.66x = 437,386.90 × 171,757.45
  4. Step 4: Simplify right side
    316,947.66x = 75,124,458,607.41
  5. Step 5: Solve for x
    x = 75,124,458,607.41/316,947.66
  6. Step 6: Final answer
    x = 237,024.81

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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.