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Finding the Fourth Proportional to 38,558.88, 57,838.30 and 10,856.88

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Solution

The fourth proportional to 38,558.88, 57,838.30 and 10,856.88 is: 16,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,558.88 : 57,838.30 = 10,856.88 : x
  2. Step 2: Convert to fraction form
    38,558.88/57,838.30 = 10,856.88/x
  3. Step 3: Cross multiply
    38,558.88x = 57,838.30 × 10,856.88
  4. Step 4: Simplify right side
    38,558.88x = 627,943,482.50
  5. Step 5: Solve for x
    x = 627,943,482.50/38,558.88
  6. Step 6: Final answer
    x = 16,285.31

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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.