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Finding the Fourth Proportional to 18,926.16, 26,118.12 and 10,312.30

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Solution

The fourth proportional to 18,926.16, 26,118.12 and 10,312.30 is: 14,230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.16 : 26,118.12 = 10,312.30 : x
  2. Step 2: Convert to fraction form
    18,926.16/26,118.12 = 10,312.30/x
  3. Step 3: Cross multiply
    18,926.16x = 26,118.12 × 10,312.30
  4. Step 4: Simplify right side
    18,926.16x = 269,337,888.88
  5. Step 5: Solve for x
    x = 269,337,888.88/18,926.16
  6. Step 6: Final answer
    x = 14,230.98

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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.