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Finding the Fourth Proportional to 139,441.80, 192,447.19 and 79,032.00

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Solution

The fourth proportional to 139,441.80, 192,447.19 and 79,032.00 is: 109,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,441.80 : 192,447.19 = 79,032.00 : x
  2. Step 2: Convert to fraction form
    139,441.80/192,447.19 = 79,032.00/x
  3. Step 3: Cross multiply
    139,441.80x = 192,447.19 × 79,032.00
  4. Step 4: Simplify right side
    139,441.80x = 15,209,487,140.55
  5. Step 5: Solve for x
    x = 15,209,487,140.55/139,441.80
  6. Step 6: Final answer
    x = 109,074.08

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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.