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Finding the Fourth Proportional to 35,893,872.40, 53,840,808.60 and 13,171,817.20

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Solution

The fourth proportional to 35,893,872.40, 53,840,808.60 and 13,171,817.20 is: 19,757,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,893,872.40 : 53,840,808.60 = 13,171,817.20 : x
  2. Step 2: Convert to fraction form
    35,893,872.40/53,840,808.60 = 13,171,817.20/x
  3. Step 3: Cross multiply
    35,893,872.40x = 53,840,808.60 × 13,171,817.20
  4. Step 4: Simplify right side
    35,893,872.40x = 709,181,288,779,387.88
  5. Step 5: Solve for x
    x = 709,181,288,779,387.88/35,893,872.40
  6. Step 6: Final answer
    x = 19,757,725.80

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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.