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Finding the Fourth Proportional to 19,137.87, 26,411.90 and 10,641.65

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Solution

The fourth proportional to 19,137.87, 26,411.90 and 10,641.65 is: 14,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.87 : 26,411.90 = 10,641.65 : x
  2. Step 2: Convert to fraction form
    19,137.87/26,411.90 = 10,641.65/x
  3. Step 3: Cross multiply
    19,137.87x = 26,411.90 × 10,641.65
  4. Step 4: Simplify right side
    19,137.87x = 281,066,010.37
  5. Step 5: Solve for x
    x = 281,066,010.37/19,137.87
  6. Step 6: Final answer
    x = 14,686.38

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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.