Home / 21,318,666.60-31,977,999.90-19,086,614.40

Finding the Fourth Proportional to 21,318,666.60, 31,977,999.90 and 19,086,614.40

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Solution

The fourth proportional to 21,318,666.60, 31,977,999.90 and 19,086,614.40 is: 28,629,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318,666.60 : 31,977,999.90 = 19,086,614.40 : x
  2. Step 2: Convert to fraction form
    21,318,666.60/31,977,999.90 = 19,086,614.40/x
  3. Step 3: Cross multiply
    21,318,666.60x = 31,977,999.90 × 19,086,614.40
  4. Step 4: Simplify right side
    21,318,666.60x = 610,351,753,374,538.50
  5. Step 5: Solve for x
    x = 610,351,753,374,538.50/21,318,666.60
  6. Step 6: Final answer
    x = 28,629,921.60

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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.