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Finding the Fourth Proportional to 906,138.28, 1,361,698.65 and 846,890.92

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Solution

The fourth proportional to 906,138.28, 1,361,698.65 and 846,890.92 is: 1,272,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,138.28 : 1,361,698.65 = 846,890.92 : x
  2. Step 2: Convert to fraction form
    906,138.28/1,361,698.65 = 846,890.92/x
  3. Step 3: Cross multiply
    906,138.28x = 1,361,698.65 × 846,890.92
  4. Step 4: Simplify right side
    906,138.28x = 1,153,210,215,652.76
  5. Step 5: Solve for x
    x = 1,153,210,215,652.76/906,138.28
  6. Step 6: Final answer
    x = 1,272,664.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.