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Finding the Fourth Proportional to 119,289.18, 164,619.26 and 65,574.54

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Solution

The fourth proportional to 119,289.18, 164,619.26 and 65,574.54 is: 90,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,289.18 : 164,619.26 = 65,574.54 : x
  2. Step 2: Convert to fraction form
    119,289.18/164,619.26 = 65,574.54/x
  3. Step 3: Cross multiply
    119,289.18x = 164,619.26 × 65,574.54
  4. Step 4: Simplify right side
    119,289.18x = 10,794,831,426.54
  5. Step 5: Solve for x
    x = 10,794,831,426.54/119,289.18
  6. Step 6: Final answer
    x = 90,492.96

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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.