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Finding the Fourth Proportional to 113,345.80, 169,629.90 and 104,014.60

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Solution

The fourth proportional to 113,345.80, 169,629.90 and 104,014.60 is: 155,665.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,345.80 : 169,629.90 = 104,014.60 : x
  2. Step 2: Convert to fraction form
    113,345.80/169,629.90 = 104,014.60/x
  3. Step 3: Cross multiply
    113,345.80x = 169,629.90 × 104,014.60
  4. Step 4: Simplify right side
    113,345.80x = 17,643,986,196.54
  5. Step 5: Solve for x
    x = 17,643,986,196.54/113,345.80
  6. Step 6: Final answer
    x = 155,665.11

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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.