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Finding the Fourth Proportional to 119,782.50, 165,300.60 and 66,068.94

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Solution

The fourth proportional to 119,782.50, 165,300.60 and 66,068.94 is: 91,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,782.50 : 165,300.60 = 66,068.94 : x
  2. Step 2: Convert to fraction form
    119,782.50/165,300.60 = 66,068.94/x
  3. Step 3: Cross multiply
    119,782.50x = 165,300.60 × 66,068.94
  4. Step 4: Simplify right side
    119,782.50x = 10,921,235,423.36
  5. Step 5: Solve for x
    x = 10,921,235,423.36/119,782.50
  6. Step 6: Final answer
    x = 91,175.55

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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.