Home / 198,693,969.78-298,017,482.67-53,138,812.19

Finding the Fourth Proportional to 198,693,969.78, 298,017,482.67 and 53,138,812.19

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Solution

The fourth proportional to 198,693,969.78, 298,017,482.67 and 53,138,812.19 is: 79,701,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,693,969.78 : 298,017,482.67 = 53,138,812.19 : x
  2. Step 2: Convert to fraction form
    198,693,969.78/298,017,482.67 = 53,138,812.19/x
  3. Step 3: Cross multiply
    198,693,969.78x = 298,017,482.67 × 53,138,812.19
  4. Step 4: Simplify right side
    198,693,969.78x = 15,836,295,039,447,624
  5. Step 5: Solve for x
    x = 15,836,295,039,447,624/198,693,969.78
  6. Step 6: Final answer
    x = 79,701,940.91

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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.