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Finding the Fourth Proportional to 93,261.89, 128,701.31 and 50,820.41

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Solution

The fourth proportional to 93,261.89, 128,701.31 and 50,820.41 is: 70,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,261.89 : 128,701.31 = 50,820.41 : x
  2. Step 2: Convert to fraction form
    93,261.89/128,701.31 = 50,820.41/x
  3. Step 3: Cross multiply
    93,261.89x = 128,701.31 × 50,820.41
  4. Step 4: Simplify right side
    93,261.89x = 6,540,652,444.13
  5. Step 5: Solve for x
    x = 6,540,652,444.13/93,261.89
  6. Step 6: Final answer
    x = 70,132.11

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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.