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Finding the Fourth Proportional to 19,503.45, 26,917.98 and 11,953.98

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Solution

The fourth proportional to 19,503.45, 26,917.98 and 11,953.98 is: 16,498.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,503.45 : 26,917.98 = 11,953.98 : x
  2. Step 2: Convert to fraction form
    19,503.45/26,917.98 = 11,953.98/x
  3. Step 3: Cross multiply
    19,503.45x = 26,917.98 × 11,953.98
  4. Step 4: Simplify right side
    19,503.45x = 321,776,994.56
  5. Step 5: Solve for x
    x = 321,776,994.56/19,503.45
  6. Step 6: Final answer
    x = 16,498.47

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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.