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Finding the Fourth Proportional to 986,546.80, 1,478,216.40 and 892,068.40

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Solution

The fourth proportional to 986,546.80, 1,478,216.40 and 892,068.40 is: 1,336,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,546.80 : 1,478,216.40 = 892,068.40 : x
  2. Step 2: Convert to fraction form
    986,546.80/1,478,216.40 = 892,068.40/x
  3. Step 3: Cross multiply
    986,546.80x = 1,478,216.40 × 892,068.40
  4. Step 4: Simplify right side
    986,546.80x = 1,318,670,138,801.76
  5. Step 5: Solve for x
    x = 1,318,670,138,801.76/986,546.80
  6. Step 6: Final answer
    x = 1,336,652.39

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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.