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Finding the Fourth Proportional to 18,444.69, 25,444.56 and 11,635.63

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Solution

The fourth proportional to 18,444.69, 25,444.56 and 11,635.63 is: 16,051.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,444.69 : 25,444.56 = 11,635.63 : x
  2. Step 2: Convert to fraction form
    18,444.69/25,444.56 = 11,635.63/x
  3. Step 3: Cross multiply
    18,444.69x = 25,444.56 × 11,635.63
  4. Step 4: Simplify right side
    18,444.69x = 296,063,485.67
  5. Step 5: Solve for x
    x = 296,063,485.67/18,444.69
  6. Step 6: Final answer
    x = 16,051.42

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Half scale
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Double scale
Find fourth proportional to 18,445.69, 25,445.94 and 11,636.63
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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.