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Finding the Fourth Proportional to 125,093.92, 172,616.72 and 71,368.59

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Solution

The fourth proportional to 125,093.92, 172,616.72 and 71,368.59 is: 98,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,093.92 : 172,616.72 = 71,368.59 : x
  2. Step 2: Convert to fraction form
    125,093.92/172,616.72 = 71,368.59/x
  3. Step 3: Cross multiply
    125,093.92x = 172,616.72 × 71,368.59
  4. Step 4: Simplify right side
    125,093.92x = 12,319,412,608.74
  5. Step 5: Solve for x
    x = 12,319,412,608.74/125,093.92
  6. Step 6: Final answer
    x = 98,481.31

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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.