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Finding the Fourth Proportional to 70,294.36, 105,441.58 and 28,741.36

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Solution

The fourth proportional to 70,294.36, 105,441.58 and 28,741.36 is: 43,112.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,294.36 : 105,441.58 = 28,741.36 : x
  2. Step 2: Convert to fraction form
    70,294.36/105,441.58 = 28,741.36/x
  3. Step 3: Cross multiply
    70,294.36x = 105,441.58 × 28,741.36
  4. Step 4: Simplify right side
    70,294.36x = 3,030,534,409.75
  5. Step 5: Solve for x
    x = 3,030,534,409.75/70,294.36
  6. Step 6: Final answer
    x = 43,112.06

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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.