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Finding the Fourth Proportional to 93,908.51, 140,955 and 68,877.28

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Solution

The fourth proportional to 93,908.51, 140,955 and 68,877.28 is: 103,383.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,908.51 : 140,955 = 68,877.28 : x
  2. Step 2: Convert to fraction form
    93,908.51/140,955 = 68,877.28/x
  3. Step 3: Cross multiply
    93,908.51x = 140,955 × 68,877.28
  4. Step 4: Simplify right side
    93,908.51x = 9,708,596,650.01
  5. Step 5: Solve for x
    x = 9,708,596,650.01/93,908.51
  6. Step 6: Final answer
    x = 103,383.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.