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Finding the Fourth Proportional to 1,946,718.72, 2,919,571.20 and 824,209.92

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Solution

The fourth proportional to 1,946,718.72, 2,919,571.20 and 824,209.92 is: 1,236,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946,718.72 : 2,919,571.20 = 824,209.92 : x
  2. Step 2: Convert to fraction form
    1,946,718.72/2,919,571.20 = 824,209.92/x
  3. Step 3: Cross multiply
    1,946,718.72x = 2,919,571.20 × 824,209.92
  4. Step 4: Simplify right side
    1,946,718.72x = 2,406,339,545,186.30
  5. Step 5: Solve for x
    x = 2,406,339,545,186.30/1,946,718.72
  6. Step 6: Final answer
    x = 1,236,100.28

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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.