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Finding the Fourth Proportional to 640,756.92, 961,273.26 and 191,514.30

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Solution

The fourth proportional to 640,756.92, 961,273.26 and 191,514.30 is: 287,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,756.92 : 961,273.26 = 191,514.30 : x
  2. Step 2: Convert to fraction form
    640,756.92/961,273.26 = 191,514.30/x
  3. Step 3: Cross multiply
    640,756.92x = 961,273.26 × 191,514.30
  4. Step 4: Simplify right side
    640,756.92x = 184,097,575,497.62
  5. Step 5: Solve for x
    x = 184,097,575,497.62/640,756.92
  6. Step 6: Final answer
    x = 287,312.66

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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.