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Finding the Fourth Proportional to 19,116, 26,379.63 and 10,618.11

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Solution

The fourth proportional to 19,116, 26,379.63 and 10,618.11 is: 14,652.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116 : 26,379.63 = 10,618.11 : x
  2. Step 2: Convert to fraction form
    19,116/26,379.63 = 10,618.11/x
  3. Step 3: Cross multiply
    19,116x = 26,379.63 × 10,618.11
  4. Step 4: Simplify right side
    19,116x = 280,101,813.10
  5. Step 5: Solve for x
    x = 280,101,813.10/19,116
  6. Step 6: Final answer
    x = 14,652.74

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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.