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Finding the Fourth Proportional to 4,981,668.94, 7,472,510.70 and 1,387,446.22

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Solution

The fourth proportional to 4,981,668.94, 7,472,510.70 and 1,387,446.22 is: 2,081,171.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981,668.94 : 7,472,510.70 = 1,387,446.22 : x
  2. Step 2: Convert to fraction form
    4,981,668.94/7,472,510.70 = 1,387,446.22/x
  3. Step 3: Cross multiply
    4,981,668.94x = 7,472,510.70 × 1,387,446.22
  4. Step 4: Simplify right side
    4,981,668.94x = 10,367,706,724,624.55
  5. Step 5: Solve for x
    x = 10,367,706,724,624.55/4,981,668.94
  6. Step 6: Final answer
    x = 2,081,171.36

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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.