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Finding the Fourth Proportional to 86,356.63, 129,539.57 and 27,196.91

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Solution

The fourth proportional to 86,356.63, 129,539.57 and 27,196.91 is: 40,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,356.63 : 129,539.57 = 27,196.91 : x
  2. Step 2: Convert to fraction form
    86,356.63/129,539.57 = 27,196.91/x
  3. Step 3: Cross multiply
    86,356.63x = 129,539.57 × 27,196.91
  4. Step 4: Simplify right side
    86,356.63x = 3,523,075,243.05
  5. Step 5: Solve for x
    x = 3,523,075,243.05/86,356.63
  6. Step 6: Final answer
    x = 40,796.81

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1.5x scale

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.