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Finding the Fourth Proportional to 119,970.74, 165,558.30 and 66,254.70

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Solution

The fourth proportional to 119,970.74, 165,558.30 and 66,254.70 is: 91,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,970.74 : 165,558.30 = 66,254.70 : x
  2. Step 2: Convert to fraction form
    119,970.74/165,558.30 = 66,254.70/x
  3. Step 3: Cross multiply
    119,970.74x = 165,558.30 × 66,254.70
  4. Step 4: Simplify right side
    119,970.74x = 10,969,015,499.01
  5. Step 5: Solve for x
    x = 10,969,015,499.01/119,970.74
  6. Step 6: Final answer
    x = 91,430.76

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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.