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Finding the Fourth Proportional to 71,042.94, 98,039.16 and 39,211.83

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Solution

The fourth proportional to 71,042.94, 98,039.16 and 39,211.83 is: 54,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,042.94 : 98,039.16 = 39,211.83 : x
  2. Step 2: Convert to fraction form
    71,042.94/98,039.16 = 39,211.83/x
  3. Step 3: Cross multiply
    71,042.94x = 98,039.16 × 39,211.83
  4. Step 4: Simplify right side
    71,042.94x = 3,844,294,875.26
  5. Step 5: Solve for x
    x = 3,844,294,875.26/71,042.94
  6. Step 6: Final answer
    x = 54,112.27

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1.5x scale

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.