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Finding the Fourth Proportional to 125,722.60, 188,583.90 and 120,884.20

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Solution

The fourth proportional to 125,722.60, 188,583.90 and 120,884.20 is: 181,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,722.60 : 188,583.90 = 120,884.20 : x
  2. Step 2: Convert to fraction form
    125,722.60/188,583.90 = 120,884.20/x
  3. Step 3: Cross multiply
    125,722.60x = 188,583.90 × 120,884.20
  4. Step 4: Simplify right side
    125,722.60x = 22,796,813,884.38
  5. Step 5: Solve for x
    x = 22,796,813,884.38/125,722.60
  6. Step 6: Final answer
    x = 181,326.30

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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.