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Finding the Fourth Proportional to 141,139.69, 211,742.35 and 47,645.44

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Solution

The fourth proportional to 141,139.69, 211,742.35 and 47,645.44 is: 71,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,139.69 : 211,742.35 = 47,645.44 : x
  2. Step 2: Convert to fraction form
    141,139.69/211,742.35 = 47,645.44/x
  3. Step 3: Cross multiply
    141,139.69x = 211,742.35 × 47,645.44
  4. Step 4: Simplify right side
    141,139.69x = 10,088,556,783.91
  5. Step 5: Solve for x
    x = 10,088,556,783.91/141,139.69
  6. Step 6: Final answer
    x = 71,479.23

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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.