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Finding the Fourth Proportional to 18,923.18, 26,113.99 and 10,970.02

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Solution

The fourth proportional to 18,923.18, 26,113.99 and 10,970.02 is: 15,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.18 : 26,113.99 = 10,970.02 : x
  2. Step 2: Convert to fraction form
    18,923.18/26,113.99 = 10,970.02/x
  3. Step 3: Cross multiply
    18,923.18x = 26,113.99 × 10,970.02
  4. Step 4: Simplify right side
    18,923.18x = 286,470,992.58
  5. Step 5: Solve for x
    x = 286,470,992.58/18,923.18
  6. Step 6: Final answer
    x = 15,138.63

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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.