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Finding the Fourth Proportional to 8,990,670.56, 12,402,917.60 and 5,892,369.60

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Solution

The fourth proportional to 8,990,670.56, 12,402,917.60 and 5,892,369.60 is: 8,128,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990,670.56 : 12,402,917.60 = 5,892,369.60 : x
  2. Step 2: Convert to fraction form
    8,990,670.56/12,402,917.60 = 5,892,369.60/x
  3. Step 3: Cross multiply
    8,990,670.56x = 12,402,917.60 × 5,892,369.60
  4. Step 4: Simplify right side
    8,990,670.56x = 73,082,574,617,544.95
  5. Step 5: Solve for x
    x = 73,082,574,617,544.95/8,990,670.56
  6. Step 6: Final answer
    x = 8,128,712.33

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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.