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Finding the Fourth Proportional to 76,561.01, 105,642.62 and 43,850.32

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Solution

The fourth proportional to 76,561.01, 105,642.62 and 43,850.32 is: 60,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,561.01 : 105,642.62 = 43,850.32 : x
  2. Step 2: Convert to fraction form
    76,561.01/105,642.62 = 43,850.32/x
  3. Step 3: Cross multiply
    76,561.01x = 105,642.62 × 43,850.32
  4. Step 4: Simplify right side
    76,561.01x = 4,632,462,692.64
  5. Step 5: Solve for x
    x = 4,632,462,692.64/76,561.01
  6. Step 6: Final answer
    x = 60,506.81

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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.