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Finding the Fourth Proportional to 113,816.95, 170,743.95 and 42,745.12

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Solution

The fourth proportional to 113,816.95, 170,743.95 and 42,745.12 is: 64,124.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,816.95 : 170,743.95 = 42,745.12 : x
  2. Step 2: Convert to fraction form
    113,816.95/170,743.95 = 42,745.12/x
  3. Step 3: Cross multiply
    113,816.95x = 170,743.95 × 42,745.12
  4. Step 4: Simplify right side
    113,816.95x = 7,298,470,205.16
  5. Step 5: Solve for x
    x = 7,298,470,205.16/113,816.95
  6. Step 6: Final answer
    x = 64,124.63

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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.