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Finding the Fourth Proportional to 19,309, 28,899.21 and 14,603.07

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Solution

The fourth proportional to 19,309, 28,899.21 and 14,603.07 is: 21,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309 : 28,899.21 = 14,603.07 : x
  2. Step 2: Convert to fraction form
    19,309/28,899.21 = 14,603.07/x
  3. Step 3: Cross multiply
    19,309x = 28,899.21 × 14,603.07
  4. Step 4: Simplify right side
    19,309x = 422,017,186.57
  5. Step 5: Solve for x
    x = 422,017,186.57/19,309
  6. Step 6: Final answer
    x = 21,855.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.