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Finding the Fourth Proportional to 71,092.60, 98,106.42 and 39,260.81

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Solution

The fourth proportional to 71,092.60, 98,106.42 and 39,260.81 is: 54,179.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,092.60 : 98,106.42 = 39,260.81 : x
  2. Step 2: Convert to fraction form
    71,092.60/98,106.42 = 39,260.81/x
  3. Step 3: Cross multiply
    71,092.60x = 98,106.42 × 39,260.81
  4. Step 4: Simplify right side
    71,092.60x = 3,851,737,907.89
  5. Step 5: Solve for x
    x = 3,851,737,907.89/71,092.60
  6. Step 6: Final answer
    x = 54,179.17

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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.