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Finding the Fourth Proportional to 20,007,034.20, 28,085,430.60 and 20,007,034.20

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Solution

The fourth proportional to 20,007,034.20, 28,085,430.60 and 20,007,034.20 is: 28,085,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007,034.20 : 28,085,430.60 = 20,007,034.20 : x
  2. Step 2: Convert to fraction form
    20,007,034.20/28,085,430.60 = 20,007,034.20/x
  3. Step 3: Cross multiply
    20,007,034.20x = 28,085,430.60 × 20,007,034.20
  4. Step 4: Simplify right side
    20,007,034.20x = 561,906,170,535,926.50
  5. Step 5: Solve for x
    x = 561,906,170,535,926.50/20,007,034.20
  6. Step 6: Final answer
    x = 28,085,430.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.