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Finding the Fourth Proportional to 93,161.76, 128,559.78 and 50,719.44

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Solution

The fourth proportional to 93,161.76, 128,559.78 and 50,719.44 is: 69,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,161.76 : 128,559.78 = 50,719.44 : x
  2. Step 2: Convert to fraction form
    93,161.76/128,559.78 = 50,719.44/x
  3. Step 3: Cross multiply
    93,161.76x = 128,559.78 × 50,719.44
  4. Step 4: Simplify right side
    93,161.76x = 6,520,480,048.12
  5. Step 5: Solve for x
    x = 6,520,480,048.12/93,161.76
  6. Step 6: Final answer
    x = 69,990.95

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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.