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Finding the Fourth Proportional to 19,932,907.80, 27,924,966.60 and 19,932,907.80

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Solution

The fourth proportional to 19,932,907.80, 27,924,966.60 and 19,932,907.80 is: 27,924,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,932,907.80 : 27,924,966.60 = 19,932,907.80 : x
  2. Step 2: Convert to fraction form
    19,932,907.80/27,924,966.60 = 19,932,907.80/x
  3. Step 3: Cross multiply
    19,932,907.80x = 27,924,966.60 × 19,932,907.80
  4. Step 4: Simplify right side
    19,932,907.80x = 556,625,784,555,879.50
  5. Step 5: Solve for x
    x = 556,625,784,555,879.50/19,932,907.80
  6. Step 6: Final answer
    x = 27,924,966.60

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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.