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Finding the Fourth Proportional to 18,842.65, 26,004.45 and 10,346.21

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Solution

The fourth proportional to 18,842.65, 26,004.45 and 10,346.21 is: 14,278.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.65 : 26,004.45 = 10,346.21 : x
  2. Step 2: Convert to fraction form
    18,842.65/26,004.45 = 10,346.21/x
  3. Step 3: Cross multiply
    18,842.65x = 26,004.45 × 10,346.21
  4. Step 4: Simplify right side
    18,842.65x = 269,047,500.63
  5. Step 5: Solve for x
    x = 269,047,500.63/18,842.65
  6. Step 6: Final answer
    x = 14,278.64

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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.