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Finding the Fourth Proportional to 11,662,698.70, 17,494,048.05 and 7,421,668.30

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Solution

The fourth proportional to 11,662,698.70, 17,494,048.05 and 7,421,668.30 is: 11,132,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,662,698.70 : 17,494,048.05 = 7,421,668.30 : x
  2. Step 2: Convert to fraction form
    11,662,698.70/17,494,048.05 = 7,421,668.30/x
  3. Step 3: Cross multiply
    11,662,698.70x = 17,494,048.05 × 7,421,668.30
  4. Step 4: Simplify right side
    11,662,698.70x = 129,835,021,851,361.81
  5. Step 5: Solve for x
    x = 129,835,021,851,361.81/11,662,698.70
  6. Step 6: Final answer
    x = 11,132,502.45

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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.