Home / 209,820,511.12-289,436,065.56-147,189,857.12

Finding the Fourth Proportional to 209,820,511.12, 289,436,065.56 and 147,189,857.12

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Solution

The fourth proportional to 209,820,511.12, 289,436,065.56 and 147,189,857.12 is: 203,040,460.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,820,511.12 : 289,436,065.56 = 147,189,857.12 : x
  2. Step 2: Convert to fraction form
    209,820,511.12/289,436,065.56 = 147,189,857.12/x
  3. Step 3: Cross multiply
    209,820,511.12x = 289,436,065.56 × 147,189,857.12
  4. Step 4: Simplify right side
    209,820,511.12x = 42,602,053,135,151,352
  5. Step 5: Solve for x
    x = 42,602,053,135,151,352/209,820,511.12
  6. Step 6: Final answer
    x = 203,040,460.19

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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.