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Finding the Fourth Proportional to 14,668.84, 20,236.44 and 8,700.76

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Solution

The fourth proportional to 14,668.84, 20,236.44 and 8,700.76 is: 12,003.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,668.84 : 20,236.44 = 8,700.76 : x
  2. Step 2: Convert to fraction form
    14,668.84/20,236.44 = 8,700.76/x
  3. Step 3: Cross multiply
    14,668.84x = 20,236.44 × 8,700.76
  4. Step 4: Simplify right side
    14,668.84x = 176,072,407.69
  5. Step 5: Solve for x
    x = 176,072,407.69/14,668.84
  6. Step 6: Final answer
    x = 12,003.16

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Half scale
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Double scale
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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.