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Finding the Fourth Proportional to 125,915.88, 188,804.74 and 49,937.48

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Solution

The fourth proportional to 125,915.88, 188,804.74 and 49,937.48 is: 74,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,915.88 : 188,804.74 = 49,937.48 : x
  2. Step 2: Convert to fraction form
    125,915.88/188,804.74 = 49,937.48/x
  3. Step 3: Cross multiply
    125,915.88x = 188,804.74 × 49,937.48
  4. Step 4: Simplify right side
    125,915.88x = 9,428,432,927.66
  5. Step 5: Solve for x
    x = 9,428,432,927.66/125,915.88
  6. Step 6: Final answer
    x = 74,878.82

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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.