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Finding the Fourth Proportional to 3,309,713.63, 4,964,855.45 and 913,558.67

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Solution

The fourth proportional to 3,309,713.63, 4,964,855.45 and 913,558.67 is: 1,370,416.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309,713.63 : 4,964,855.45 = 913,558.67 : x
  2. Step 2: Convert to fraction form
    3,309,713.63/4,964,855.45 = 913,558.67/x
  3. Step 3: Cross multiply
    3,309,713.63x = 4,964,855.45 × 913,558.67
  4. Step 4: Simplify right side
    3,309,713.63x = 4,535,686,741,644.25
  5. Step 5: Solve for x
    x = 4,535,686,741,644.25/3,309,713.63
  6. Step 6: Final answer
    x = 1,370,416.67

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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.