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Finding the Fourth Proportional to 29,653.58, 40,911.80 and 18,311.24

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Solution

The fourth proportional to 29,653.58, 40,911.80 and 18,311.24 is: 25,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,653.58 : 40,911.80 = 18,311.24 : x
  2. Step 2: Convert to fraction form
    29,653.58/40,911.80 = 18,311.24/x
  3. Step 3: Cross multiply
    29,653.58x = 40,911.80 × 18,311.24
  4. Step 4: Simplify right side
    29,653.58x = 749,145,788.63
  5. Step 5: Solve for x
    x = 749,145,788.63/29,653.58
  6. Step 6: Final answer
    x = 25,263.25

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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.