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Finding the Fourth Proportional to 93,326.45, 128,796.68 and 53,040.29

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Solution

The fourth proportional to 93,326.45, 128,796.68 and 53,040.29 is: 73,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,326.45 : 128,796.68 = 53,040.29 : x
  2. Step 2: Convert to fraction form
    93,326.45/128,796.68 = 53,040.29/x
  3. Step 3: Cross multiply
    93,326.45x = 128,796.68 × 53,040.29
  4. Step 4: Simplify right side
    93,326.45x = 6,831,412,746.85
  5. Step 5: Solve for x
    x = 6,831,412,746.85/93,326.45
  6. Step 6: Final answer
    x = 73,199.11

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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.