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Finding the Fourth Proportional to 18,999.10, 26,664.35 and 18,999.10

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Solution

The fourth proportional to 18,999.10, 26,664.35 and 18,999.10 is: 26,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.10 : 26,664.35 = 18,999.10 : x
  2. Step 2: Convert to fraction form
    18,999.10/26,664.35 = 18,999.10/x
  3. Step 3: Cross multiply
    18,999.10x = 26,664.35 × 18,999.10
  4. Step 4: Simplify right side
    18,999.10x = 506,598,652.09
  5. Step 5: Solve for x
    x = 506,598,652.09/18,999.10
  6. Step 6: Final answer
    x = 26,664.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.