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Finding the Fourth Proportional to 93,195.68, 128,620.32 and 57,378.56

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Solution

The fourth proportional to 93,195.68, 128,620.32 and 57,378.56 is: 79,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,195.68 : 128,620.32 = 57,378.56 : x
  2. Step 2: Convert to fraction form
    93,195.68/128,620.32 = 57,378.56/x
  3. Step 3: Cross multiply
    93,195.68x = 128,620.32 × 57,378.56
  4. Step 4: Simplify right side
    93,195.68x = 7,380,048,748.34
  5. Step 5: Solve for x
    x = 7,380,048,748.34/93,195.68
  6. Step 6: Final answer
    x = 79,188.74

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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.