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Finding the Fourth Proportional to 113,455, 170,162.44 and 42,361.68

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Solution

The fourth proportional to 113,455, 170,162.44 and 42,361.68 is: 63,535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,455 : 170,162.44 = 42,361.68 : x
  2. Step 2: Convert to fraction form
    113,455/170,162.44 = 42,361.68/x
  3. Step 3: Cross multiply
    113,455x = 170,162.44 × 42,361.68
  4. Step 4: Simplify right side
    113,455x = 7,208,366,831.30
  5. Step 5: Solve for x
    x = 7,208,366,831.30/113,455
  6. Step 6: Final answer
    x = 63,535.03

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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.