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Finding the Fourth Proportional to 18,900.10, 26,083.20 and 10,835.10

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Solution

The fourth proportional to 18,900.10, 26,083.20 and 10,835.10 is: 14,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.10 : 26,083.20 = 10,835.10 : x
  2. Step 2: Convert to fraction form
    18,900.10/26,083.20 = 10,835.10/x
  3. Step 3: Cross multiply
    18,900.10x = 26,083.20 × 10,835.10
  4. Step 4: Simplify right side
    18,900.10x = 282,614,080.32
  5. Step 5: Solve for x
    x = 282,614,080.32/18,900.10
  6. Step 6: Final answer
    x = 14,953.05

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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.