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Finding the Fourth Proportional to 93,321.36, 128,786.88 and 53,041.92

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Solution

The fourth proportional to 93,321.36, 128,786.88 and 53,041.92 is: 73,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.36 : 128,786.88 = 53,041.92 : x
  2. Step 2: Convert to fraction form
    93,321.36/128,786.88 = 53,041.92/x
  3. Step 3: Cross multiply
    93,321.36x = 128,786.88 × 53,041.92
  4. Step 4: Simplify right side
    93,321.36x = 6,831,103,386.01
  5. Step 5: Solve for x
    x = 6,831,103,386.01/93,321.36
  6. Step 6: Final answer
    x = 73,199.78

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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.