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Finding the Fourth Proportional to 19,615.64, 27,069.56 and 10,663.12

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Solution

The fourth proportional to 19,615.64, 27,069.56 and 10,663.12 is: 14,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.64 : 27,069.56 = 10,663.12 : x
  2. Step 2: Convert to fraction form
    19,615.64/27,069.56 = 10,663.12/x
  3. Step 3: Cross multiply
    19,615.64x = 27,069.56 × 10,663.12
  4. Step 4: Simplify right side
    19,615.64x = 288,645,966.63
  5. Step 5: Solve for x
    x = 288,645,966.63/19,615.64
  6. Step 6: Final answer
    x = 14,715.09

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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.