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Finding the Fourth Proportional to 251,411,721.55, 346,978,379.33 and 152,289,560.59

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Solution

The fourth proportional to 251,411,721.55, 346,978,379.33 and 152,289,560.59 is: 210,177,889.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,411,721.55 : 346,978,379.33 = 152,289,560.59 : x
  2. Step 2: Convert to fraction form
    251,411,721.55/346,978,379.33 = 152,289,560.59/x
  3. Step 3: Cross multiply
    251,411,721.55x = 346,978,379.33 × 152,289,560.59
  4. Step 4: Simplify right side
    251,411,721.55x = 52,841,184,922,396,040
  5. Step 5: Solve for x
    x = 52,841,184,922,396,040/251,411,721.55
  6. Step 6: Final answer
    x = 210,177,889.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.