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Finding the Fourth Proportional to 25,407.60, 38,086.80 and 11,359.68

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Solution

The fourth proportional to 25,407.60, 38,086.80 and 11,359.68 is: 17,028.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,407.60 : 38,086.80 = 11,359.68 : x
  2. Step 2: Convert to fraction form
    25,407.60/38,086.80 = 11,359.68/x
  3. Step 3: Cross multiply
    25,407.60x = 38,086.80 × 11,359.68
  4. Step 4: Simplify right side
    25,407.60x = 432,653,860.22
  5. Step 5: Solve for x
    x = 432,653,860.22/25,407.60
  6. Step 6: Final answer
    x = 17,028.52

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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.