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Finding the Fourth Proportional to 194,216.64, 291,182.40 and 81,892.32

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Solution

The fourth proportional to 194,216.64, 291,182.40 and 81,892.32 is: 122,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,216.64 : 291,182.40 = 81,892.32 : x
  2. Step 2: Convert to fraction form
    194,216.64/291,182.40 = 81,892.32/x
  3. Step 3: Cross multiply
    194,216.64x = 291,182.40 × 81,892.32
  4. Step 4: Simplify right side
    194,216.64x = 23,845,602,279.17
  5. Step 5: Solve for x
    x = 23,845,602,279.17/194,216.64
  6. Step 6: Final answer
    x = 122,778.37

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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.