Home / 19,178,749.20-28,743,629.40-7,806,349.20

Finding the Fourth Proportional to 19,178,749.20, 28,743,629.40 and 7,806,349.20

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Solution

The fourth proportional to 19,178,749.20, 28,743,629.40 and 7,806,349.20 is: 11,699,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178,749.20 : 28,743,629.40 = 7,806,349.20 : x
  2. Step 2: Convert to fraction form
    19,178,749.20/28,743,629.40 = 7,806,349.20/x
  3. Step 3: Cross multiply
    19,178,749.20x = 28,743,629.40 × 7,806,349.20
  4. Step 4: Simplify right side
    19,178,749.20x = 224,382,808,371,786.47
  5. Step 5: Solve for x
    x = 224,382,808,371,786.47/19,178,749.20
  6. Step 6: Final answer
    x = 11,699,553.82

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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.