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Finding the Fourth Proportional to 689,758.53, 951,949.63 and 417,818.44

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Solution

The fourth proportional to 689,758.53, 951,949.63 and 417,818.44 is: 576,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,758.53 : 951,949.63 = 417,818.44 : x
  2. Step 2: Convert to fraction form
    689,758.53/951,949.63 = 417,818.44/x
  3. Step 3: Cross multiply
    689,758.53x = 951,949.63 × 417,818.44
  4. Step 4: Simplify right side
    689,758.53x = 397,742,109,365.18
  5. Step 5: Solve for x
    x = 397,742,109,365.18/689,758.53
  6. Step 6: Final answer
    x = 576,639.64

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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.