Home / 186,623,999.10-279,935,998.65-128,994,507.90

Finding the Fourth Proportional to 186,623,999.10, 279,935,998.65 and 128,994,507.90

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Solution

The fourth proportional to 186,623,999.10, 279,935,998.65 and 128,994,507.90 is: 193,491,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,623,999.10 : 279,935,998.65 = 128,994,507.90 : x
  2. Step 2: Convert to fraction form
    186,623,999.10/279,935,998.65 = 128,994,507.90/x
  3. Step 3: Cross multiply
    186,623,999.10x = 279,935,998.65 × 128,994,507.90
  4. Step 4: Simplify right side
    186,623,999.10x = 36,110,206,389,351,816
  5. Step 5: Solve for x
    x = 36,110,206,389,351,816/186,623,999.10
  6. Step 6: Final answer
    x = 193,491,761.85

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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.