Home / 128,941,804.80-193,412,707.20-43,841,260.80

Finding the Fourth Proportional to 128,941,804.80, 193,412,707.20 and 43,841,260.80

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Solution

The fourth proportional to 128,941,804.80, 193,412,707.20 and 43,841,260.80 is: 65,761,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,941,804.80 : 193,412,707.20 = 43,841,260.80 : x
  2. Step 2: Convert to fraction form
    128,941,804.80/193,412,707.20 = 43,841,260.80/x
  3. Step 3: Cross multiply
    128,941,804.80x = 193,412,707.20 × 43,841,260.80
  4. Step 4: Simplify right side
    128,941,804.80x = 8,479,456,938,389,237
  5. Step 5: Solve for x
    x = 8,479,456,938,389,237/128,941,804.80
  6. Step 6: Final answer
    x = 65,761,891.20

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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.