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Finding the Fourth Proportional to 641,404.17, 885,231.63 and 369,419.76

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Solution

The fourth proportional to 641,404.17, 885,231.63 and 369,419.76 is: 509,853.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,404.17 : 885,231.63 = 369,419.76 : x
  2. Step 2: Convert to fraction form
    641,404.17/885,231.63 = 369,419.76/x
  3. Step 3: Cross multiply
    641,404.17x = 885,231.63 × 369,419.76
  4. Step 4: Simplify right side
    641,404.17x = 327,022,056,299.01
  5. Step 5: Solve for x
    x = 327,022,056,299.01/641,404.17
  6. Step 6: Final answer
    x = 509,853.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.