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Finding the Fourth Proportional to 686,366.71, 947,184.43 and 376,268.75

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Solution

The fourth proportional to 686,366.71, 947,184.43 and 376,268.75 is: 519,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,366.71 : 947,184.43 = 376,268.75 : x
  2. Step 2: Convert to fraction form
    686,366.71/947,184.43 = 376,268.75/x
  3. Step 3: Cross multiply
    686,366.71x = 947,184.43 × 376,268.75
  4. Step 4: Simplify right side
    686,366.71x = 356,395,899,666.91
  5. Step 5: Solve for x
    x = 356,395,899,666.91/686,366.71
  6. Step 6: Final answer
    x = 519,249.98

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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.