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Finding the Fourth Proportional to 28,150.92, 38,846.66 and 15,574.92

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Solution

The fourth proportional to 28,150.92, 38,846.66 and 15,574.92 is: 21,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.92 : 38,846.66 = 15,574.92 : x
  2. Step 2: Convert to fraction form
    28,150.92/38,846.66 = 15,574.92/x
  3. Step 3: Cross multiply
    28,150.92x = 38,846.66 × 15,574.92
  4. Step 4: Simplify right side
    28,150.92x = 605,033,621.77
  5. Step 5: Solve for x
    x = 605,033,621.77/28,150.92
  6. Step 6: Final answer
    x = 21,492.50

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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.