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Finding the Fourth Proportional to 53,142,189.60, 79,571,566.80 and 53,142,189.60

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Solution

The fourth proportional to 53,142,189.60, 79,571,566.80 and 53,142,189.60 is: 79,571,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,142,189.60 : 79,571,566.80 = 53,142,189.60 : x
  2. Step 2: Convert to fraction form
    53,142,189.60/79,571,566.80 = 53,142,189.60/x
  3. Step 3: Cross multiply
    53,142,189.60x = 79,571,566.80 × 53,142,189.60
  4. Step 4: Simplify right side
    53,142,189.60x = 4,228,607,289,654,665
  5. Step 5: Solve for x
    x = 4,228,607,289,654,665/53,142,189.60
  6. Step 6: Final answer
    x = 79,571,566.80

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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.