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Finding the Fourth Proportional to 125,021.58, 172,529.80 and 67,660.92

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Solution

The fourth proportional to 125,021.58, 172,529.80 and 67,660.92 is: 93,372.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,021.58 : 172,529.80 = 67,660.92 : x
  2. Step 2: Convert to fraction form
    125,021.58/172,529.80 = 67,660.92/x
  3. Step 3: Cross multiply
    125,021.58x = 172,529.80 × 67,660.92
  4. Step 4: Simplify right side
    125,021.58x = 11,673,524,995.42
  5. Step 5: Solve for x
    x = 11,673,524,995.42/125,021.58
  6. Step 6: Final answer
    x = 93,372.08

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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.