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Finding the Fourth Proportional to 117,324,892.80, 175,987,339.20 and 87,091,804.80

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Solution

The fourth proportional to 117,324,892.80, 175,987,339.20 and 87,091,804.80 is: 130,637,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,324,892.80 : 175,987,339.20 = 87,091,804.80 : x
  2. Step 2: Convert to fraction form
    117,324,892.80/175,987,339.20 = 87,091,804.80/x
  3. Step 3: Cross multiply
    117,324,892.80x = 175,987,339.20 × 87,091,804.80
  4. Step 4: Simplify right side
    117,324,892.80x = 15,327,054,992,877,786
  5. Step 5: Solve for x
    x = 15,327,054,992,877,786/117,324,892.80
  6. Step 6: Final answer
    x = 130,637,707.20

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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.