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Finding the Fourth Proportional to 18,603,407.70, 27,905,111.55 and 13,461,716.03

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Solution

The fourth proportional to 18,603,407.70, 27,905,111.55 and 13,461,716.03 is: 20,192,574.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603,407.70 : 27,905,111.55 = 13,461,716.03 : x
  2. Step 2: Convert to fraction form
    18,603,407.70/27,905,111.55 = 13,461,716.03/x
  3. Step 3: Cross multiply
    18,603,407.70x = 27,905,111.55 × 13,461,716.03
  4. Step 4: Simplify right side
    18,603,407.70x = 375,650,687,332,047.62
  5. Step 5: Solve for x
    x = 375,650,687,332,047.62/18,603,407.70
  6. Step 6: Final answer
    x = 20,192,574.04

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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.