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Finding the Fourth Proportional to 96,421.80, 144,632.70 and 79,800.60

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Solution

The fourth proportional to 96,421.80, 144,632.70 and 79,800.60 is: 119,700.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,421.80 : 144,632.70 = 79,800.60 : x
  2. Step 2: Convert to fraction form
    96,421.80/144,632.70 = 79,800.60/x
  3. Step 3: Cross multiply
    96,421.80x = 144,632.70 × 79,800.60
  4. Step 4: Simplify right side
    96,421.80x = 11,541,776,239.62
  5. Step 5: Solve for x
    x = 11,541,776,239.62/96,421.80
  6. Step 6: Final answer
    x = 119,700.90

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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.