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Finding the Fourth Proportional to 67,758.60, 93,506.22 and 39,077.40

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Solution

The fourth proportional to 67,758.60, 93,506.22 and 39,077.40 is: 53,926.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,758.60 : 93,506.22 = 39,077.40 : x
  2. Step 2: Convert to fraction form
    67,758.60/93,506.22 = 39,077.40/x
  3. Step 3: Cross multiply
    67,758.60x = 93,506.22 × 39,077.40
  4. Step 4: Simplify right side
    67,758.60x = 3,653,979,961.43
  5. Step 5: Solve for x
    x = 3,653,979,961.43/67,758.60
  6. Step 6: Final answer
    x = 53,926.44

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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.