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Finding the Fourth Proportional to 19,710.99, 27,196.25 and 12,646.98

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Solution

The fourth proportional to 19,710.99, 27,196.25 and 12,646.98 is: 17,449.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.99 : 27,196.25 = 12,646.98 : x
  2. Step 2: Convert to fraction form
    19,710.99/27,196.25 = 12,646.98/x
  3. Step 3: Cross multiply
    19,710.99x = 27,196.25 × 12,646.98
  4. Step 4: Simplify right side
    19,710.99x = 343,950,366.59
  5. Step 5: Solve for x
    x = 343,950,366.59/19,710.99
  6. Step 6: Final answer
    x = 17,449.67

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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.