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Finding the Fourth Proportional to 125,662.80, 188,429.40 and 46,736.40

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Solution

The fourth proportional to 125,662.80, 188,429.40 and 46,736.40 is: 70,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,662.80 : 188,429.40 = 46,736.40 : x
  2. Step 2: Convert to fraction form
    125,662.80/188,429.40 = 46,736.40/x
  3. Step 3: Cross multiply
    125,662.80x = 188,429.40 × 46,736.40
  4. Step 4: Simplify right side
    125,662.80x = 8,806,511,810.16
  5. Step 5: Solve for x
    x = 8,806,511,810.16/125,662.80
  6. Step 6: Final answer
    x = 70,080.50

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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.