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Finding the Fourth Proportional to 189,401.60, 283,905.60 and 77,033.60

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Solution

The fourth proportional to 189,401.60, 283,905.60 and 77,033.60 is: 115,470.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,401.60 : 283,905.60 = 77,033.60 : x
  2. Step 2: Convert to fraction form
    189,401.60/283,905.60 = 77,033.60/x
  3. Step 3: Cross multiply
    189,401.60x = 283,905.60 × 77,033.60
  4. Step 4: Simplify right side
    189,401.60x = 21,870,270,428.16
  5. Step 5: Solve for x
    x = 21,870,270,428.16/189,401.60
  6. Step 6: Final answer
    x = 115,470.36

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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.