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Finding the Fourth Proportional to 20,744,365.60, 31,116,548.40 and 20,744,365.60

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Solution

The fourth proportional to 20,744,365.60, 31,116,548.40 and 20,744,365.60 is: 31,116,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744,365.60 : 31,116,548.40 = 20,744,365.60 : x
  2. Step 2: Convert to fraction form
    20,744,365.60/31,116,548.40 = 20,744,365.60/x
  3. Step 3: Cross multiply
    20,744,365.60x = 31,116,548.40 × 20,744,365.60
  4. Step 4: Simplify right side
    20,744,365.60x = 645,493,056,219,695
  5. Step 5: Solve for x
    x = 645,493,056,219,695/20,744,365.60
  6. Step 6: Final answer
    x = 31,116,548.40

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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.