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Finding the Fourth Proportional to 18,374.74, 25,354.46 and 10,816.64

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Solution

The fourth proportional to 18,374.74, 25,354.46 and 10,816.64 is: 14,925.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.74 : 25,354.46 = 10,816.64 : x
  2. Step 2: Convert to fraction form
    18,374.74/25,354.46 = 10,816.64/x
  3. Step 3: Cross multiply
    18,374.74x = 25,354.46 × 10,816.64
  4. Step 4: Simplify right side
    18,374.74x = 274,250,066.21
  5. Step 5: Solve for x
    x = 274,250,066.21/18,374.74
  6. Step 6: Final answer
    x = 14,925.38

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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.