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Finding the Fourth Proportional to 188,646.44, 260,330.90 and 106,990.20

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Solution

The fourth proportional to 188,646.44, 260,330.90 and 106,990.20 is: 147,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,646.44 : 260,330.90 = 106,990.20 : x
  2. Step 2: Convert to fraction form
    188,646.44/260,330.90 = 106,990.20/x
  3. Step 3: Cross multiply
    188,646.44x = 260,330.90 × 106,990.20
  4. Step 4: Simplify right side
    188,646.44x = 27,852,854,522.23
  5. Step 5: Solve for x
    x = 27,852,854,522.23/188,646.44
  6. Step 6: Final answer
    x = 147,645.80

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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.