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Finding the Fourth Proportional to 688,709.88, 950,414.58 and 386,903.88

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Solution

The fourth proportional to 688,709.88, 950,414.58 and 386,903.88 is: 533,924.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,709.88 : 950,414.58 = 386,903.88 : x
  2. Step 2: Convert to fraction form
    688,709.88/950,414.58 = 386,903.88/x
  3. Step 3: Cross multiply
    688,709.88x = 950,414.58 × 386,903.88
  4. Step 4: Simplify right side
    688,709.88x = 367,719,088,610.57
  5. Step 5: Solve for x
    x = 367,719,088,610.57/688,709.88
  6. Step 6: Final answer
    x = 533,924.51

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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.