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Finding the Fourth Proportional to 152,980.90, 211,118.34 and 92,562.64

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Solution

The fourth proportional to 152,980.90, 211,118.34 and 92,562.64 is: 127,739.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,980.90 : 211,118.34 = 92,562.64 : x
  2. Step 2: Convert to fraction form
    152,980.90/211,118.34 = 92,562.64/x
  3. Step 3: Cross multiply
    152,980.90x = 211,118.34 × 92,562.64
  4. Step 4: Simplify right side
    152,980.90x = 19,541,670,902.82
  5. Step 5: Solve for x
    x = 19,541,670,902.82/152,980.90
  6. Step 6: Final answer
    x = 127,739.29

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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.