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Finding the Fourth Proportional to 43,570.76, 65,356.11 and 12,406.01

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Solution

The fourth proportional to 43,570.76, 65,356.11 and 12,406.01 is: 18,609.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,570.76 : 65,356.11 = 12,406.01 : x
  2. Step 2: Convert to fraction form
    43,570.76/65,356.11 = 12,406.01/x
  3. Step 3: Cross multiply
    43,570.76x = 65,356.11 × 12,406.01
  4. Step 4: Simplify right side
    43,570.76x = 810,808,554.22
  5. Step 5: Solve for x
    x = 810,808,554.22/43,570.76
  6. Step 6: Final answer
    x = 18,609.01

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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.