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Finding the Fourth Proportional to 125,458.88, 173,133.86 and 68,870.25

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Solution

The fourth proportional to 125,458.88, 173,133.86 and 68,870.25 is: 95,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,458.88 : 173,133.86 = 68,870.25 : x
  2. Step 2: Convert to fraction form
    125,458.88/173,133.86 = 68,870.25/x
  3. Step 3: Cross multiply
    125,458.88x = 173,133.86 × 68,870.25
  4. Step 4: Simplify right side
    125,458.88x = 11,923,771,877.31
  5. Step 5: Solve for x
    x = 11,923,771,877.31/125,458.88
  6. Step 6: Final answer
    x = 95,041.28

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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.