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Finding the Fourth Proportional to 64,492.88, 96,688.42 and 40,750.39

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Solution

The fourth proportional to 64,492.88, 96,688.42 and 40,750.39 is: 61,093.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,492.88 : 96,688.42 = 40,750.39 : x
  2. Step 2: Convert to fraction form
    64,492.88/96,688.42 = 40,750.39/x
  3. Step 3: Cross multiply
    64,492.88x = 96,688.42 × 40,750.39
  4. Step 4: Simplify right side
    64,492.88x = 3,940,090,842.47
  5. Step 5: Solve for x
    x = 3,940,090,842.47/64,492.88
  6. Step 6: Final answer
    x = 61,093.43

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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.