Home / 221,223,719.11-331,851,521.89-84,909,102.61

Finding the Fourth Proportional to 221,223,719.11, 331,851,521.89 and 84,909,102.61

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Solution

The fourth proportional to 221,223,719.11, 331,851,521.89 and 84,909,102.61 is: 127,369,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,223,719.11 : 331,851,521.89 = 84,909,102.61 : x
  2. Step 2: Convert to fraction form
    221,223,719.11/331,851,521.89 = 84,909,102.61/x
  3. Step 3: Cross multiply
    221,223,719.11x = 331,851,521.89 × 84,909,102.61
  4. Step 4: Simplify right side
    221,223,719.11x = 28,177,214,923,579,996
  5. Step 5: Solve for x
    x = 28,177,214,923,579,996/221,223,719.11
  6. Step 6: Final answer
    x = 127,369,773.17

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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.