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Finding the Fourth Proportional to 38,399.95, 57,599.95 and 12,106.74

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Solution

The fourth proportional to 38,399.95, 57,599.95 and 12,106.74 is: 18,160.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,399.95 : 57,599.95 = 12,106.74 : x
  2. Step 2: Convert to fraction form
    38,399.95/57,599.95 = 12,106.74/x
  3. Step 3: Cross multiply
    38,399.95x = 57,599.95 × 12,106.74
  4. Step 4: Simplify right side
    38,399.95x = 697,347,618.66
  5. Step 5: Solve for x
    x = 697,347,618.66/38,399.95
  6. Step 6: Final answer
    x = 18,160.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.