Home / 193,996,979.20-291,107,443.20-72,840,678.40

Finding the Fourth Proportional to 193,996,979.20, 291,107,443.20 and 72,840,678.40

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Solution

The fourth proportional to 193,996,979.20, 291,107,443.20 and 72,840,678.40 is: 109,303,060.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,996,979.20 : 291,107,443.20 = 72,840,678.40 : x
  2. Step 2: Convert to fraction form
    193,996,979.20/291,107,443.20 = 72,840,678.40/x
  3. Step 3: Cross multiply
    193,996,979.20x = 291,107,443.20 × 72,840,678.40
  4. Step 4: Simplify right side
    193,996,979.20x = 21,204,463,649,977,468
  5. Step 5: Solve for x
    x = 21,204,463,649,977,468/193,996,979.20
  6. Step 6: Final answer
    x = 109,303,060.99

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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.