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Finding the Fourth Proportional to 3,669,288,061.65, 5,151,515,168.55 and 3,669,288,061.65

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Solution

The fourth proportional to 3,669,288,061.65, 5,151,515,168.55 and 3,669,288,061.65 is: 5,151,515,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669,288,061.65 : 5,151,515,168.55 = 3,669,288,061.65 : x
  2. Step 2: Convert to fraction form
    3,669,288,061.65/5,151,515,168.55 = 3,669,288,061.65/x
  3. Step 3: Cross multiply
    3,669,288,061.65x = 5,151,515,168.55 × 3,669,288,061.65
  4. Step 4: Simplify right side
    3,669,288,061.65x = 18,902,393,107,369,402,368
  5. Step 5: Solve for x
    x = 18,902,393,107,369,402,368/3,669,288,061.65
  6. Step 6: Final answer
    x = 5,151,515,168.55

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.