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Finding the Fourth Proportional to 18,892.56, 26,071.89 and 10,509.06

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Solution

The fourth proportional to 18,892.56, 26,071.89 and 10,509.06 is: 14,502.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.56 : 26,071.89 = 10,509.06 : x
  2. Step 2: Convert to fraction form
    18,892.56/26,071.89 = 10,509.06/x
  3. Step 3: Cross multiply
    18,892.56x = 26,071.89 × 10,509.06
  4. Step 4: Simplify right side
    18,892.56x = 273,991,056.32
  5. Step 5: Solve for x
    x = 273,991,056.32/18,892.56
  6. Step 6: Final answer
    x = 14,502.59

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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.