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Finding the Fourth Proportional to 128,000.27, 191,891.96 and 53,073.65

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Solution

The fourth proportional to 128,000.27, 191,891.96 and 53,073.65 is: 79,565.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,000.27 : 191,891.96 = 53,073.65 : x
  2. Step 2: Convert to fraction form
    128,000.27/191,891.96 = 53,073.65/x
  3. Step 3: Cross multiply
    128,000.27x = 191,891.96 × 53,073.65
  4. Step 4: Simplify right side
    128,000.27x = 10,184,406,937.22
  5. Step 5: Solve for x
    x = 10,184,406,937.22/128,000.27
  6. Step 6: Final answer
    x = 79,565.51

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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.