Home / 128,191,996.80-192,287,995.20-51,526,857.60

Finding the Fourth Proportional to 128,191,996.80, 192,287,995.20 and 51,526,857.60

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Solution

The fourth proportional to 128,191,996.80, 192,287,995.20 and 51,526,857.60 is: 77,290,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,191,996.80 : 192,287,995.20 = 51,526,857.60 : x
  2. Step 2: Convert to fraction form
    128,191,996.80/192,287,995.20 = 51,526,857.60/x
  3. Step 3: Cross multiply
    128,191,996.80x = 192,287,995.20 × 51,526,857.60
  4. Step 4: Simplify right side
    128,191,996.80x = 9,907,996,146,859,884
  5. Step 5: Solve for x
    x = 9,907,996,146,859,884/128,191,996.80
  6. Step 6: Final answer
    x = 77,290,286.40

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1.5x scale

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.