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Finding the Fourth Proportional to 116,348.64, 174,544.56 and 76,938.72

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Solution

The fourth proportional to 116,348.64, 174,544.56 and 76,938.72 is: 115,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,348.64 : 174,544.56 = 76,938.72 : x
  2. Step 2: Convert to fraction form
    116,348.64/174,544.56 = 76,938.72/x
  3. Step 3: Cross multiply
    116,348.64x = 174,544.56 × 76,938.72
  4. Step 4: Simplify right side
    116,348.64x = 13,429,235,029.36
  5. Step 5: Solve for x
    x = 13,429,235,029.36/116,348.64
  6. Step 6: Final answer
    x = 115,422.36

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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.