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Finding the Fourth Proportional to 93,392.94, 128,893.26 and 53,112.72

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Solution

The fourth proportional to 93,392.94, 128,893.26 and 53,112.72 is: 73,301.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,392.94 : 128,893.26 = 53,112.72 : x
  2. Step 2: Convert to fraction form
    93,392.94/128,893.26 = 53,112.72/x
  3. Step 3: Cross multiply
    93,392.94x = 128,893.26 × 53,112.72
  4. Step 4: Simplify right side
    93,392.94x = 6,845,871,628.27
  5. Step 5: Solve for x
    x = 6,845,871,628.27/93,392.94
  6. Step 6: Final answer
    x = 73,301.81

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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.