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Finding the Fourth Proportional to 92,716.80, 139,075.20 and 50,580.60

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Solution

The fourth proportional to 92,716.80, 139,075.20 and 50,580.60 is: 75,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,716.80 : 139,075.20 = 50,580.60 : x
  2. Step 2: Convert to fraction form
    92,716.80/139,075.20 = 50,580.60/x
  3. Step 3: Cross multiply
    92,716.80x = 139,075.20 × 50,580.60
  4. Step 4: Simplify right side
    92,716.80x = 7,034,507,061.12
  5. Step 5: Solve for x
    x = 7,034,507,061.12/92,716.80
  6. Step 6: Final answer
    x = 75,870.90

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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.