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Finding the Fourth Proportional to 175,607.12, 263,583.48 and 128,726.48

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Solution

The fourth proportional to 175,607.12, 263,583.48 and 128,726.48 is: 193,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,607.12 : 263,583.48 = 128,726.48 : x
  2. Step 2: Convert to fraction form
    175,607.12/263,583.48 = 128,726.48/x
  3. Step 3: Cross multiply
    175,607.12x = 263,583.48 × 128,726.48
  4. Step 4: Simplify right side
    175,607.12x = 33,930,173,566.55
  5. Step 5: Solve for x
    x = 33,930,173,566.55/175,607.12
  6. Step 6: Final answer
    x = 193,216.39

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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.