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Finding the Fourth Proportional to 19,879.16, 27,433.95 and 10,927.50

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Solution

The fourth proportional to 19,879.16, 27,433.95 and 10,927.50 is: 15,080.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.16 : 27,433.95 = 10,927.50 : x
  2. Step 2: Convert to fraction form
    19,879.16/27,433.95 = 10,927.50/x
  3. Step 3: Cross multiply
    19,879.16x = 27,433.95 × 10,927.50
  4. Step 4: Simplify right side
    19,879.16x = 299,784,488.63
  5. Step 5: Solve for x
    x = 299,784,488.63/19,879.16
  6. Step 6: Final answer
    x = 15,080.34

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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.