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Finding the Fourth Proportional to 13,871,608.60, 20,807,412.90 and 4,897,067.80

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Solution

The fourth proportional to 13,871,608.60, 20,807,412.90 and 4,897,067.80 is: 7,345,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871,608.60 : 20,807,412.90 = 4,897,067.80 : x
  2. Step 2: Convert to fraction form
    13,871,608.60/20,807,412.90 = 4,897,067.80/x
  3. Step 3: Cross multiply
    13,871,608.60x = 20,807,412.90 × 4,897,067.80
  4. Step 4: Simplify right side
    13,871,608.60x = 101,895,311,713,894.61
  5. Step 5: Solve for x
    x = 101,895,311,713,894.61/13,871,608.60
  6. Step 6: Final answer
    x = 7,345,601.70

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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.