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Finding the Fourth Proportional to 14,668.51, 20,242.51 and 7,954.11

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Solution

The fourth proportional to 14,668.51, 20,242.51 and 7,954.11 is: 10,976.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,668.51 : 20,242.51 = 7,954.11 : x
  2. Step 2: Convert to fraction form
    14,668.51/20,242.51 = 7,954.11/x
  3. Step 3: Cross multiply
    14,668.51x = 20,242.51 × 7,954.11
  4. Step 4: Simplify right side
    14,668.51x = 161,011,159.80
  5. Step 5: Solve for x
    x = 161,011,159.80/14,668.51
  6. Step 6: Final answer
    x = 10,976.66

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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.