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Finding the Fourth Proportional to 68,913.58, 95,093.64 and 38,702.20

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Solution

The fourth proportional to 68,913.58, 95,093.64 and 38,702.20 is: 53,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,913.58 : 95,093.64 = 38,702.20 : x
  2. Step 2: Convert to fraction form
    68,913.58/95,093.64 = 38,702.20/x
  3. Step 3: Cross multiply
    68,913.58x = 95,093.64 × 38,702.20
  4. Step 4: Simplify right side
    68,913.58x = 3,680,333,074.01
  5. Step 5: Solve for x
    x = 3,680,333,074.01/68,913.58
  6. Step 6: Final answer
    x = 53,405.05

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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.