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Finding the Fourth Proportional to 7,672,661.64, 11,510,831.66 and 2,555,135.87

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Solution

The fourth proportional to 7,672,661.64, 11,510,831.66 and 2,555,135.87 is: 3,833,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672,661.64 : 11,510,831.66 = 2,555,135.87 : x
  2. Step 2: Convert to fraction form
    7,672,661.64/11,510,831.66 = 2,555,135.87/x
  3. Step 3: Cross multiply
    7,672,661.64x = 11,510,831.66 × 2,555,135.87
  4. Step 4: Simplify right side
    7,672,661.64x = 29,411,738,797,667.81
  5. Step 5: Solve for x
    x = 29,411,738,797,667.81/7,672,661.64
  6. Step 6: Final answer
    x = 3,833,316.28

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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.