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Finding the Fourth Proportional to 127,990.80, 191,987.64 and 39,245.04

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Solution

The fourth proportional to 127,990.80, 191,987.64 and 39,245.04 is: 58,868.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,990.80 : 191,987.64 = 39,245.04 : x
  2. Step 2: Convert to fraction form
    127,990.80/191,987.64 = 39,245.04/x
  3. Step 3: Cross multiply
    127,990.80x = 191,987.64 × 39,245.04
  4. Step 4: Simplify right side
    127,990.80x = 7,534,562,611.31
  5. Step 5: Solve for x
    x = 7,534,562,611.31/127,990.80
  6. Step 6: Final answer
    x = 58,868.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.