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Finding the Fourth Proportional to 98,936.60, 148,477.80 and 61,551.66

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Solution

The fourth proportional to 98,936.60, 148,477.80 and 61,551.66 is: 92,372.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,936.60 : 148,477.80 = 61,551.66 : x
  2. Step 2: Convert to fraction form
    98,936.60/148,477.80 = 61,551.66/x
  3. Step 3: Cross multiply
    98,936.60x = 148,477.80 × 61,551.66
  4. Step 4: Simplify right side
    98,936.60x = 9,139,055,063.15
  5. Step 5: Solve for x
    x = 9,139,055,063.15/98,936.60
  6. Step 6: Final answer
    x = 92,372.84

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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.