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Finding the Fourth Proportional to 19,761.19, 29,500.88 and 19,069.18

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Solution

The fourth proportional to 19,761.19, 29,500.88 and 19,069.18 is: 28,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.19 : 29,500.88 = 19,069.18 : x
  2. Step 2: Convert to fraction form
    19,761.19/29,500.88 = 19,069.18/x
  3. Step 3: Cross multiply
    19,761.19x = 29,500.88 × 19,069.18
  4. Step 4: Simplify right side
    19,761.19x = 562,557,590.88
  5. Step 5: Solve for x
    x = 562,557,590.88/19,761.19
  6. Step 6: Final answer
    x = 28,467.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.