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Finding the Fourth Proportional to 686,364.21, 947,180.97 and 376,266.24

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Solution

The fourth proportional to 686,364.21, 947,180.97 and 376,266.24 is: 519,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,364.21 : 947,180.97 = 376,266.24 : x
  2. Step 2: Convert to fraction form
    686,364.21/947,180.97 = 376,266.24/x
  3. Step 3: Cross multiply
    686,364.21x = 947,180.97 × 376,266.24
  4. Step 4: Simplify right side
    686,364.21x = 356,392,218,459.26
  5. Step 5: Solve for x
    x = 356,392,218,459.26/686,364.21
  6. Step 6: Final answer
    x = 519,246.51

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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.