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Finding the Fourth Proportional to 18,820.60, 25,973.16 and 10,323.50

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Solution

The fourth proportional to 18,820.60, 25,973.16 and 10,323.50 is: 14,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.60 : 25,973.16 = 10,323.50 : x
  2. Step 2: Convert to fraction form
    18,820.60/25,973.16 = 10,323.50/x
  3. Step 3: Cross multiply
    18,820.60x = 25,973.16 × 10,323.50
  4. Step 4: Simplify right side
    18,820.60x = 268,133,917.26
  5. Step 5: Solve for x
    x = 268,133,917.26/18,820.60
  6. Step 6: Final answer
    x = 14,246.83

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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.