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Finding the Fourth Proportional to 864,832.40, 1,297,248.60 and 864,832.40

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Solution

The fourth proportional to 864,832.40, 1,297,248.60 and 864,832.40 is: 1,297,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,832.40 : 1,297,248.60 = 864,832.40 : x
  2. Step 2: Convert to fraction form
    864,832.40/1,297,248.60 = 864,832.40/x
  3. Step 3: Cross multiply
    864,832.40x = 1,297,248.60 × 864,832.40
  4. Step 4: Simplify right side
    864,832.40x = 1,121,902,620,134.64
  5. Step 5: Solve for x
    x = 1,121,902,620,134.64/864,832.40
  6. Step 6: Final answer
    x = 1,297,248.60

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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.