Home / 209,869,607.28-289,618,439.78-115,787,719.29

Finding the Fourth Proportional to 209,869,607.28, 289,618,439.78 and 115,787,719.29

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Solution

The fourth proportional to 209,869,607.28, 289,618,439.78 and 115,787,719.29 is: 159,786,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,869,607.28 : 289,618,439.78 = 115,787,719.29 : x
  2. Step 2: Convert to fraction form
    209,869,607.28/289,618,439.78 = 115,787,719.29/x
  3. Step 3: Cross multiply
    209,869,607.28x = 289,618,439.78 × 115,787,719.29
  4. Step 4: Simplify right side
    209,869,607.28x = 33,534,258,606,743,884
  5. Step 5: Solve for x
    x = 33,534,258,606,743,884/209,869,607.28
  6. Step 6: Final answer
    x = 159,786,159.80

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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.