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Finding the Fourth Proportional to 104,154.76, 143,735.94 and 61,146.46

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Solution

The fourth proportional to 104,154.76, 143,735.94 and 61,146.46 is: 84,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,154.76 : 143,735.94 = 61,146.46 : x
  2. Step 2: Convert to fraction form
    104,154.76/143,735.94 = 61,146.46/x
  3. Step 3: Cross multiply
    104,154.76x = 143,735.94 × 61,146.46
  4. Step 4: Simplify right side
    104,154.76x = 8,788,943,905.77
  5. Step 5: Solve for x
    x = 8,788,943,905.77/104,154.76
  6. Step 6: Final answer
    x = 84,383.51

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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.