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Finding the Fourth Proportional to 173,912.60, 260,966.10 and 74,055.80

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Solution

The fourth proportional to 173,912.60, 260,966.10 and 74,055.80 is: 111,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,912.60 : 260,966.10 = 74,055.80 : x
  2. Step 2: Convert to fraction form
    173,912.60/260,966.10 = 74,055.80/x
  3. Step 3: Cross multiply
    173,912.60x = 260,966.10 × 74,055.80
  4. Step 4: Simplify right side
    173,912.60x = 19,326,053,308.38
  5. Step 5: Solve for x
    x = 19,326,053,308.38/173,912.60
  6. Step 6: Final answer
    x = 111,125.09

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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.