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Finding the Fourth Proportional to 112,308.90, 168,379.08 and 67,926.60

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Solution

The fourth proportional to 112,308.90, 168,379.08 and 67,926.60 is: 101,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,308.90 : 168,379.08 = 67,926.60 : x
  2. Step 2: Convert to fraction form
    112,308.90/168,379.08 = 67,926.60/x
  3. Step 3: Cross multiply
    112,308.90x = 168,379.08 × 67,926.60
  4. Step 4: Simplify right side
    112,308.90x = 11,437,418,415.53
  5. Step 5: Solve for x
    x = 11,437,418,415.53/112,308.90
  6. Step 6: Final answer
    x = 101,838.93

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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.