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Finding the Fourth Proportional to 132,893.78, 183,386.66 and 72,463.93

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Solution

The fourth proportional to 132,893.78, 183,386.66 and 72,463.93 is: 99,996.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,893.78 : 183,386.66 = 72,463.93 : x
  2. Step 2: Convert to fraction form
    132,893.78/183,386.66 = 72,463.93/x
  3. Step 3: Cross multiply
    132,893.78x = 183,386.66 × 72,463.93
  4. Step 4: Simplify right side
    132,893.78x = 13,288,917,272.39
  5. Step 5: Solve for x
    x = 13,288,917,272.39/132,893.78
  6. Step 6: Final answer
    x = 99,996.54

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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.