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Finding the Fourth Proportional to 19,955.76, 27,536.76 and 11,570.64

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Solution

The fourth proportional to 19,955.76, 27,536.76 and 11,570.64 is: 15,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.76 : 27,536.76 = 11,570.64 : x
  2. Step 2: Convert to fraction form
    19,955.76/27,536.76 = 11,570.64/x
  3. Step 3: Cross multiply
    19,955.76x = 27,536.76 × 11,570.64
  4. Step 4: Simplify right side
    19,955.76x = 318,617,936.73
  5. Step 5: Solve for x
    x = 318,617,936.73/19,955.76
  6. Step 6: Final answer
    x = 15,966.21

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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.