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Finding the Fourth Proportional to 93,062.32, 128,416.08 and 54,819.61

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Solution

The fourth proportional to 93,062.32, 128,416.08 and 54,819.61 is: 75,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,062.32 : 128,416.08 = 54,819.61 : x
  2. Step 2: Convert to fraction form
    93,062.32/128,416.08 = 54,819.61/x
  3. Step 3: Cross multiply
    93,062.32x = 128,416.08 × 54,819.61
  4. Step 4: Simplify right side
    93,062.32x = 7,039,719,423.33
  5. Step 5: Solve for x
    x = 7,039,719,423.33/93,062.32
  6. Step 6: Final answer
    x = 75,645.22

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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.