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Finding the Fourth Proportional to 79,770.40, 119,425.20 and 48,666.40

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Solution

The fourth proportional to 79,770.40, 119,425.20 and 48,666.40 is: 72,859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,770.40 : 119,425.20 = 48,666.40 : x
  2. Step 2: Convert to fraction form
    79,770.40/119,425.20 = 48,666.40/x
  3. Step 3: Cross multiply
    79,770.40x = 119,425.20 × 48,666.40
  4. Step 4: Simplify right side
    79,770.40x = 5,811,994,553.28
  5. Step 5: Solve for x
    x = 5,811,994,553.28/79,770.40
  6. Step 6: Final answer
    x = 72,859.04

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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.