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Finding the Fourth Proportional to 138,592.22, 207,904.59 and 48,607.43

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Solution

The fourth proportional to 138,592.22, 207,904.59 and 48,607.43 is: 72,916.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,592.22 : 207,904.59 = 48,607.43 : x
  2. Step 2: Convert to fraction form
    138,592.22/207,904.59 = 48,607.43/x
  3. Step 3: Cross multiply
    138,592.22x = 207,904.59 × 48,607.43
  4. Step 4: Simplify right side
    138,592.22x = 10,105,706,765.58
  5. Step 5: Solve for x
    x = 10,105,706,765.58/138,592.22
  6. Step 6: Final answer
    x = 72,916.84

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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.