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Finding the Fourth Proportional to 104,232, 143,958.96 and 70,639.68

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Solution

The fourth proportional to 104,232, 143,958.96 and 70,639.68 is: 97,563.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,232 : 143,958.96 = 70,639.68 : x
  2. Step 2: Convert to fraction form
    104,232/143,958.96 = 70,639.68/x
  3. Step 3: Cross multiply
    104,232x = 143,958.96 × 70,639.68
  4. Step 4: Simplify right side
    104,232x = 10,169,214,867.53
  5. Step 5: Solve for x
    x = 10,169,214,867.53/104,232
  6. Step 6: Final answer
    x = 97,563.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.