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Finding the Fourth Proportional to 85,269.36, 127,883.28 and 37,858.40

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Solution

The fourth proportional to 85,269.36, 127,883.28 and 37,858.40 is: 56,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,269.36 : 127,883.28 = 37,858.40 : x
  2. Step 2: Convert to fraction form
    85,269.36/127,883.28 = 37,858.40/x
  3. Step 3: Cross multiply
    85,269.36x = 127,883.28 × 37,858.40
  4. Step 4: Simplify right side
    85,269.36x = 4,841,456,367.55
  5. Step 5: Solve for x
    x = 4,841,456,367.55/85,269.36
  6. Step 6: Final answer
    x = 56,778.38

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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.