Home / 28,820,419.12-39,765,666.84-17,215,711.12

Finding the Fourth Proportional to 28,820,419.12, 39,765,666.84 and 17,215,711.12

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Solution

The fourth proportional to 28,820,419.12, 39,765,666.84 and 17,215,711.12 is: 23,753,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820,419.12 : 39,765,666.84 = 17,215,711.12 : x
  2. Step 2: Convert to fraction form
    28,820,419.12/39,765,666.84 = 17,215,711.12/x
  3. Step 3: Cross multiply
    28,820,419.12x = 39,765,666.84 × 17,215,711.12
  4. Step 4: Simplify right side
    28,820,419.12x = 684,594,232,811,603.38
  5. Step 5: Solve for x
    x = 684,594,232,811,603.38/28,820,419.12
  6. Step 6: Final answer
    x = 23,753,791.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.