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Finding the Fourth Proportional to 93,451.64, 128,958.78 and 53,161.64

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Solution

The fourth proportional to 93,451.64, 128,958.78 and 53,161.64 is: 73,360.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,451.64 : 128,958.78 = 53,161.64 : x
  2. Step 2: Convert to fraction form
    93,451.64/128,958.78 = 53,161.64/x
  3. Step 3: Cross multiply
    93,451.64x = 128,958.78 × 53,161.64
  4. Step 4: Simplify right side
    93,451.64x = 6,855,659,592.41
  5. Step 5: Solve for x
    x = 6,855,659,592.41/93,451.64
  6. Step 6: Final answer
    x = 73,360.51

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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.