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Finding the Fourth Proportional to 7,062,693.36, 9,745,842.60 and 3,964,506.72

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Solution

The fourth proportional to 7,062,693.36, 9,745,842.60 and 3,964,506.72 is: 5,470,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062,693.36 : 9,745,842.60 = 3,964,506.72 : x
  2. Step 2: Convert to fraction form
    7,062,693.36/9,745,842.60 = 3,964,506.72/x
  3. Step 3: Cross multiply
    7,062,693.36x = 9,745,842.60 × 3,964,506.72
  4. Step 4: Simplify right side
    7,062,693.36x = 38,637,458,479,762.27
  5. Step 5: Solve for x
    x = 38,637,458,479,762.27/7,062,693.36
  6. Step 6: Final answer
    x = 5,470,640.80

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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.