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Finding the Fourth Proportional to 28,127, 38,847.15 and 19,158.95

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Solution

The fourth proportional to 28,127, 38,847.15 and 19,158.95 is: 26,461.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127 : 38,847.15 = 19,158.95 : x
  2. Step 2: Convert to fraction form
    28,127/38,847.15 = 19,158.95/x
  3. Step 3: Cross multiply
    28,127x = 38,847.15 × 19,158.95
  4. Step 4: Simplify right side
    28,127x = 744,270,604.49
  5. Step 5: Solve for x
    x = 744,270,604.49/28,127
  6. Step 6: Final answer
    x = 26,461.07

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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.