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Finding the Fourth Proportional to 35,816.64, 53,725.50 and 12,443.64

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Solution

The fourth proportional to 35,816.64, 53,725.50 and 12,443.64 is: 18,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,816.64 : 53,725.50 = 12,443.64 : x
  2. Step 2: Convert to fraction form
    35,816.64/53,725.50 = 12,443.64/x
  3. Step 3: Cross multiply
    35,816.64x = 53,725.50 × 12,443.64
  4. Step 4: Simplify right side
    35,816.64x = 668,540,780.82
  5. Step 5: Solve for x
    x = 668,540,780.82/35,816.64
  6. Step 6: Final answer
    x = 18,665.65

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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.