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Finding the Fourth Proportional to 18,885.40, 26,059.98 and 14,412.04

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Solution

The fourth proportional to 18,885.40, 26,059.98 and 14,412.04 is: 19,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.40 : 26,059.98 = 14,412.04 : x
  2. Step 2: Convert to fraction form
    18,885.40/26,059.98 = 14,412.04/x
  3. Step 3: Cross multiply
    18,885.40x = 26,059.98 × 14,412.04
  4. Step 4: Simplify right side
    18,885.40x = 375,577,474.16
  5. Step 5: Solve for x
    x = 375,577,474.16/18,885.40
  6. Step 6: Final answer
    x = 19,887.19

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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.