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Finding the Fourth Proportional to 125,103.06, 172,643.94 and 68,514.84

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Solution

The fourth proportional to 125,103.06, 172,643.94 and 68,514.84 is: 94,551.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,103.06 : 172,643.94 = 68,514.84 : x
  2. Step 2: Convert to fraction form
    125,103.06/172,643.94 = 68,514.84/x
  3. Step 3: Cross multiply
    125,103.06x = 172,643.94 × 68,514.84
  4. Step 4: Simplify right side
    125,103.06x = 11,828,671,926.07
  5. Step 5: Solve for x
    x = 11,828,671,926.07/125,103.06
  6. Step 6: Final answer
    x = 94,551.42

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1.5x scale

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.