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Finding the Fourth Proportional to 66,722.62, 92,075.70 and 36,507.60

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Solution

The fourth proportional to 66,722.62, 92,075.70 and 36,507.60 is: 50,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.62 : 92,075.70 = 36,507.60 : x
  2. Step 2: Convert to fraction form
    66,722.62/92,075.70 = 36,507.60/x
  3. Step 3: Cross multiply
    66,722.62x = 92,075.70 × 36,507.60
  4. Step 4: Simplify right side
    66,722.62x = 3,361,462,825.32
  5. Step 5: Solve for x
    x = 3,361,462,825.32/66,722.62
  6. Step 6: Final answer
    x = 50,379.66

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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.