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Finding the Fourth Proportional to 646,774.82, 970,304.22 and 191,330.40

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Solution

The fourth proportional to 646,774.82, 970,304.22 and 191,330.40 is: 287,037.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,774.82 : 970,304.22 = 191,330.40 : x
  2. Step 2: Convert to fraction form
    646,774.82/970,304.22 = 191,330.40/x
  3. Step 3: Cross multiply
    646,774.82x = 970,304.22 × 191,330.40
  4. Step 4: Simplify right side
    646,774.82x = 185,648,694,534.29
  5. Step 5: Solve for x
    x = 185,648,694,534.29/646,774.82
  6. Step 6: Final answer
    x = 287,037.61

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Similar ratio
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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.