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Finding the Fourth Proportional to 14,894.51, 20,554.63 and 8,180.75

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Solution

The fourth proportional to 14,894.51, 20,554.63 and 8,180.75 is: 11,289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.51 : 20,554.63 = 8,180.75 : x
  2. Step 2: Convert to fraction form
    14,894.51/20,554.63 = 8,180.75/x
  3. Step 3: Cross multiply
    14,894.51x = 20,554.63 × 8,180.75
  4. Step 4: Simplify right side
    14,894.51x = 168,152,320.31
  5. Step 5: Solve for x
    x = 168,152,320.31/14,894.51
  6. Step 6: Final answer
    x = 11,289.55

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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.