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Finding the Fourth Proportional to 57,668.16, 86,502.08 and 13,892.16

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Solution

The fourth proportional to 57,668.16, 86,502.08 and 13,892.16 is: 20,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,668.16 : 86,502.08 = 13,892.16 : x
  2. Step 2: Convert to fraction form
    57,668.16/86,502.08 = 13,892.16/x
  3. Step 3: Cross multiply
    57,668.16x = 86,502.08 × 13,892.16
  4. Step 4: Simplify right side
    57,668.16x = 1,201,700,735.69
  5. Step 5: Solve for x
    x = 1,201,700,735.69/57,668.16
  6. Step 6: Final answer
    x = 20,838.20

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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.