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Finding the Fourth Proportional to 86,290.50, 119,070.43 and 48,040.48

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Solution

The fourth proportional to 86,290.50, 119,070.43 and 48,040.48 is: 66,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,290.50 : 119,070.43 = 48,040.48 : x
  2. Step 2: Convert to fraction form
    86,290.50/119,070.43 = 48,040.48/x
  3. Step 3: Cross multiply
    86,290.50x = 119,070.43 × 48,040.48
  4. Step 4: Simplify right side
    86,290.50x = 5,720,200,611.01
  5. Step 5: Solve for x
    x = 5,720,200,611.01/86,290.50
  6. Step 6: Final answer
    x = 66,290.04

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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.