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Finding the Fourth Proportional to 188,735.84, 260,466.48 and 108,188.32

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Solution

The fourth proportional to 188,735.84, 260,466.48 and 108,188.32 is: 149,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,735.84 : 260,466.48 = 108,188.32 : x
  2. Step 2: Convert to fraction form
    188,735.84/260,466.48 = 108,188.32/x
  3. Step 3: Cross multiply
    188,735.84x = 260,466.48 × 108,188.32
  4. Step 4: Simplify right side
    188,735.84x = 28,179,430,887.51
  5. Step 5: Solve for x
    x = 28,179,430,887.51/188,735.84
  6. Step 6: Final answer
    x = 149,306.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.