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Finding the Fourth Proportional to 116,668.74, 161,014.92 and 71,376.86

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Solution

The fourth proportional to 116,668.74, 161,014.92 and 71,376.86 is: 98,507.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,668.74 : 161,014.92 = 71,376.86 : x
  2. Step 2: Convert to fraction form
    116,668.74/161,014.92 = 71,376.86/x
  3. Step 3: Cross multiply
    116,668.74x = 161,014.92 × 71,376.86
  4. Step 4: Simplify right side
    116,668.74x = 11,492,739,402.75
  5. Step 5: Solve for x
    x = 11,492,739,402.75/116,668.74
  6. Step 6: Final answer
    x = 98,507.44

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1.5x scale

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.