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Finding the Fourth Proportional to 19,339, 26,642.28 and 18,176.47

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Solution

The fourth proportional to 19,339, 26,642.28 and 18,176.47 is: 25,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,339 : 26,642.28 = 18,176.47 : x
  2. Step 2: Convert to fraction form
    19,339/26,642.28 = 18,176.47/x
  3. Step 3: Cross multiply
    19,339x = 26,642.28 × 18,176.47
  4. Step 4: Simplify right side
    19,339x = 484,262,603.15
  5. Step 5: Solve for x
    x = 484,262,603.15/19,339
  6. Step 6: Final answer
    x = 25,040.73

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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.