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Finding the Fourth Proportional to 19,695.63, 27,184.64 and 11,316.99

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Solution

The fourth proportional to 19,695.63, 27,184.64 and 11,316.99 is: 15,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.63 : 27,184.64 = 11,316.99 : x
  2. Step 2: Convert to fraction form
    19,695.63/27,184.64 = 11,316.99/x
  3. Step 3: Cross multiply
    19,695.63x = 27,184.64 × 11,316.99
  4. Step 4: Simplify right side
    19,695.63x = 307,648,242.45
  5. Step 5: Solve for x
    x = 307,648,242.45/19,695.63
  6. Step 6: Final answer
    x = 15,620.13

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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.