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Finding the Fourth Proportional to 125,054.84, 172,575.60 and 68,466.20

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Solution

The fourth proportional to 125,054.84, 172,575.60 and 68,466.20 is: 94,483.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,054.84 : 172,575.60 = 68,466.20 : x
  2. Step 2: Convert to fraction form
    125,054.84/172,575.60 = 68,466.20/x
  3. Step 3: Cross multiply
    125,054.84x = 172,575.60 × 68,466.20
  4. Step 4: Simplify right side
    125,054.84x = 11,815,595,544.72
  5. Step 5: Solve for x
    x = 11,815,595,544.72/125,054.84
  6. Step 6: Final answer
    x = 94,483.31

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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.