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Finding the Fourth Proportional to 93,415.92, 128,912.76 and 50,973.72

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Solution

The fourth proportional to 93,415.92, 128,912.76 and 50,973.72 is: 70,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,415.92 : 128,912.76 = 50,973.72 : x
  2. Step 2: Convert to fraction form
    93,415.92/128,912.76 = 50,973.72/x
  3. Step 3: Cross multiply
    93,415.92x = 128,912.76 × 50,973.72
  4. Step 4: Simplify right side
    93,415.92x = 6,571,162,932.67
  5. Step 5: Solve for x
    x = 6,571,162,932.67/93,415.92
  6. Step 6: Final answer
    x = 70,343.07

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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.