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Finding the Fourth Proportional to 93,474.54, 128,988.86 and 51,032.98

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Solution

The fourth proportional to 93,474.54, 128,988.86 and 51,032.98 is: 70,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,474.54 : 128,988.86 = 51,032.98 : x
  2. Step 2: Convert to fraction form
    93,474.54/128,988.86 = 51,032.98/x
  3. Step 3: Cross multiply
    93,474.54x = 128,988.86 × 51,032.98
  4. Step 4: Simplify right side
    93,474.54x = 6,582,685,912.60
  5. Step 5: Solve for x
    x = 6,582,685,912.60/93,474.54
  6. Step 6: Final answer
    x = 70,422.23

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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.