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Finding the Fourth Proportional to 5,227,656.52, 7,835,607.40 and 2,661,668.88

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Solution

The fourth proportional to 5,227,656.52, 7,835,607.40 and 2,661,668.88 is: 3,989,510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227,656.52 : 7,835,607.40 = 2,661,668.88 : x
  2. Step 2: Convert to fraction form
    5,227,656.52/7,835,607.40 = 2,661,668.88/x
  3. Step 3: Cross multiply
    5,227,656.52x = 7,835,607.40 × 2,661,668.88
  4. Step 4: Simplify right side
    5,227,656.52x = 20,855,792,372,477.71
  5. Step 5: Solve for x
    x = 20,855,792,372,477.71/5,227,656.52
  6. Step 6: Final answer
    x = 3,989,510.84

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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.