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Finding the Fourth Proportional to 16,815,019.20, 25,222,528.80 and 4,686,354.60

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Solution

The fourth proportional to 16,815,019.20, 25,222,528.80 and 4,686,354.60 is: 7,029,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815,019.20 : 25,222,528.80 = 4,686,354.60 : x
  2. Step 2: Convert to fraction form
    16,815,019.20/25,222,528.80 = 4,686,354.60/x
  3. Step 3: Cross multiply
    16,815,019.20x = 25,222,528.80 × 4,686,354.60
  4. Step 4: Simplify right side
    16,815,019.20x = 118,201,713,865,512.47
  5. Step 5: Solve for x
    x = 118,201,713,865,512.47/16,815,019.20
  6. Step 6: Final answer
    x = 7,029,531.90

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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.