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Finding the Fourth Proportional to 93,261.68, 139,878.86 and 45,864.04

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Solution

The fourth proportional to 93,261.68, 139,878.86 and 45,864.04 is: 68,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,261.68 : 139,878.86 = 45,864.04 : x
  2. Step 2: Convert to fraction form
    93,261.68/139,878.86 = 45,864.04/x
  3. Step 3: Cross multiply
    93,261.68x = 139,878.86 × 45,864.04
  4. Step 4: Simplify right side
    93,261.68x = 6,415,409,571.44
  5. Step 5: Solve for x
    x = 6,415,409,571.44/93,261.68
  6. Step 6: Final answer
    x = 68,789.34

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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.