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Finding the Fourth Proportional to 125,352.42, 172,985.40 and 68,763.42

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Solution

The fourth proportional to 125,352.42, 172,985.40 and 68,763.42 is: 94,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,352.42 : 172,985.40 = 68,763.42 : x
  2. Step 2: Convert to fraction form
    125,352.42/172,985.40 = 68,763.42/x
  3. Step 3: Cross multiply
    125,352.42x = 172,985.40 × 68,763.42
  4. Step 4: Simplify right side
    125,352.42x = 11,895,067,714.07
  5. Step 5: Solve for x
    x = 11,895,067,714.07/125,352.42
  6. Step 6: Final answer
    x = 94,893.00

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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.