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Finding the Fourth Proportional to 84,458.35, 115,931.63 and 74,684.06

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Solution

The fourth proportional to 84,458.35, 115,931.63 and 74,684.06 is: 102,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,458.35 : 115,931.63 = 74,684.06 : x
  2. Step 2: Convert to fraction form
    84,458.35/115,931.63 = 74,684.06/x
  3. Step 3: Cross multiply
    84,458.35x = 115,931.63 × 74,684.06
  4. Step 4: Simplify right side
    84,458.35x = 8,658,244,810.82
  5. Step 5: Solve for x
    x = 8,658,244,810.82/84,458.35
  6. Step 6: Final answer
    x = 102,514.97

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.