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Finding the Fourth Proportional to 117,586.40, 162,204.60 and 74,486.96

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Solution

The fourth proportional to 117,586.40, 162,204.60 and 74,486.96 is: 102,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,586.40 : 162,204.60 = 74,486.96 : x
  2. Step 2: Convert to fraction form
    117,586.40/162,204.60 = 74,486.96/x
  3. Step 3: Cross multiply
    117,586.40x = 162,204.60 × 74,486.96
  4. Step 4: Simplify right side
    117,586.40x = 12,082,127,552.02
  5. Step 5: Solve for x
    x = 12,082,127,552.02/117,586.40
  6. Step 6: Final answer
    x = 102,751.06

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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.