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Finding the Fourth Proportional to 18,903.95, 26,089.94 and 10,840.76

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Solution

The fourth proportional to 18,903.95, 26,089.94 and 10,840.76 is: 14,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.95 : 26,089.94 = 10,840.76 : x
  2. Step 2: Convert to fraction form
    18,903.95/26,089.94 = 10,840.76/x
  3. Step 3: Cross multiply
    18,903.95x = 26,089.94 × 10,840.76
  4. Step 4: Simplify right side
    18,903.95x = 282,834,777.95
  5. Step 5: Solve for x
    x = 282,834,777.95/18,903.95
  6. Step 6: Final answer
    x = 14,961.68

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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.