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Finding the Fourth Proportional to 71,329.61, 106,917.27 and 46,387.49

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Solution

The fourth proportional to 71,329.61, 106,917.27 and 46,387.49 is: 69,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.61 : 106,917.27 = 46,387.49 : x
  2. Step 2: Convert to fraction form
    71,329.61/106,917.27 = 46,387.49/x
  3. Step 3: Cross multiply
    71,329.61x = 106,917.27 × 46,387.49
  4. Step 4: Simplify right side
    71,329.61x = 4,959,623,084.41
  5. Step 5: Solve for x
    x = 4,959,623,084.41/71,329.61
  6. Step 6: Final answer
    x = 69,531.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.