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Finding the Fourth Proportional to 125,897.40, 188,846.10 and 69,910.20

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Solution

The fourth proportional to 125,897.40, 188,846.10 and 69,910.20 is: 104,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,897.40 : 188,846.10 = 69,910.20 : x
  2. Step 2: Convert to fraction form
    125,897.40/188,846.10 = 69,910.20/x
  3. Step 3: Cross multiply
    125,897.40x = 188,846.10 × 69,910.20
  4. Step 4: Simplify right side
    125,897.40x = 13,202,268,620.22
  5. Step 5: Solve for x
    x = 13,202,268,620.22/125,897.40
  6. Step 6: Final answer
    x = 104,865.30

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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.