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Finding the Fourth Proportional to 6,642,648.80, 9,965,722.80 and 2,382,372.80

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Solution

The fourth proportional to 6,642,648.80, 9,965,722.80 and 2,382,372.80 is: 3,574,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,648.80 : 9,965,722.80 = 2,382,372.80 : x
  2. Step 2: Convert to fraction form
    6,642,648.80/9,965,722.80 = 2,382,372.80/x
  3. Step 3: Cross multiply
    6,642,648.80x = 9,965,722.80 × 2,382,372.80
  4. Step 4: Simplify right side
    6,642,648.80x = 23,742,066,931,059.84
  5. Step 5: Solve for x
    x = 23,742,066,931,059.84/6,642,648.80
  6. Step 6: Final answer
    x = 3,574,186.69

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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.