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Finding the Fourth Proportional to 18,483.84, 25,509.76 and 10,524.80

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Solution

The fourth proportional to 18,483.84, 25,509.76 and 10,524.80 is: 14,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.84 : 25,509.76 = 10,524.80 : x
  2. Step 2: Convert to fraction form
    18,483.84/25,509.76 = 10,524.80/x
  3. Step 3: Cross multiply
    18,483.84x = 25,509.76 × 10,524.80
  4. Step 4: Simplify right side
    18,483.84x = 268,485,122.05
  5. Step 5: Solve for x
    x = 268,485,122.05/18,483.84
  6. Step 6: Final answer
    x = 14,525.40

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Half scale
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Double scale
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Similar ratio
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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.