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Finding the Fourth Proportional to 17,066.40, 25,615.80 and 10,505.40

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Solution

The fourth proportional to 17,066.40, 25,615.80 and 10,505.40 is: 15,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,066.40 : 25,615.80 = 10,505.40 : x
  2. Step 2: Convert to fraction form
    17,066.40/25,615.80 = 10,505.40/x
  3. Step 3: Cross multiply
    17,066.40x = 25,615.80 × 10,505.40
  4. Step 4: Simplify right side
    17,066.40x = 269,104,225.32
  5. Step 5: Solve for x
    x = 269,104,225.32/17,066.40
  6. Step 6: Final answer
    x = 15,768.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.