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Finding the Fourth Proportional to 116,709.90, 174,784.20 and 66,638.23

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Solution

The fourth proportional to 116,709.90, 174,784.20 and 66,638.23 is: 99,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,709.90 : 174,784.20 = 66,638.23 : x
  2. Step 2: Convert to fraction form
    116,709.90/174,784.20 = 66,638.23/x
  3. Step 3: Cross multiply
    116,709.90x = 174,784.20 × 66,638.23
  4. Step 4: Simplify right side
    116,709.90x = 11,647,309,719.97
  5. Step 5: Solve for x
    x = 11,647,309,719.97/116,709.90
  6. Step 6: Final answer
    x = 99,797.10

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1.5x scale

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.