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Finding the Fourth Proportional to 19,334.70, 26,674.02 and 12,618

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Solution

The fourth proportional to 19,334.70, 26,674.02 and 12,618 is: 17,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,334.70 : 26,674.02 = 12,618 : x
  2. Step 2: Convert to fraction form
    19,334.70/26,674.02 = 12,618/x
  3. Step 3: Cross multiply
    19,334.70x = 26,674.02 × 12,618
  4. Step 4: Simplify right side
    19,334.70x = 336,572,784.36
  5. Step 5: Solve for x
    x = 336,572,784.36/19,334.70
  6. Step 6: Final answer
    x = 17,407.71

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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.