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Finding the Fourth Proportional to 104,893.76, 144,733.42 and 61,886.81

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Solution

The fourth proportional to 104,893.76, 144,733.42 and 61,886.81 is: 85,392.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,893.76 : 144,733.42 = 61,886.81 : x
  2. Step 2: Convert to fraction form
    104,893.76/144,733.42 = 61,886.81/x
  3. Step 3: Cross multiply
    104,893.76x = 144,733.42 × 61,886.81
  4. Step 4: Simplify right side
    104,893.76x = 8,957,089,664.19
  5. Step 5: Solve for x
    x = 8,957,089,664.19/104,893.76
  6. Step 6: Final answer
    x = 85,392.02

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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.