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Finding the Fourth Proportional to 19,369.10, 26,740.06 and 13,712.06

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Solution

The fourth proportional to 19,369.10, 26,740.06 and 13,712.06 is: 18,930.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.10 : 26,740.06 = 13,712.06 : x
  2. Step 2: Convert to fraction form
    19,369.10/26,740.06 = 13,712.06/x
  3. Step 3: Cross multiply
    19,369.10x = 26,740.06 × 13,712.06
  4. Step 4: Simplify right side
    19,369.10x = 366,661,307.12
  5. Step 5: Solve for x
    x = 366,661,307.12/19,369.10
  6. Step 6: Final answer
    x = 18,930.22

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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.