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Finding the Fourth Proportional to 117,896.67, 162,672.18 and 70,140.69

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Solution

The fourth proportional to 117,896.67, 162,672.18 and 70,140.69 is: 96,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,896.67 : 162,672.18 = 70,140.69 : x
  2. Step 2: Convert to fraction form
    117,896.67/162,672.18 = 70,140.69/x
  3. Step 3: Cross multiply
    117,896.67x = 162,672.18 × 70,140.69
  4. Step 4: Simplify right side
    117,896.67x = 11,409,938,949.00
  5. Step 5: Solve for x
    x = 11,409,938,949.00/117,896.67
  6. Step 6: Final answer
    x = 96,779.15

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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.