Home / 200,584,657.20-300,876,985.80-85,793,401.20

Finding the Fourth Proportional to 200,584,657.20, 300,876,985.80 and 85,793,401.20

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Solution

The fourth proportional to 200,584,657.20, 300,876,985.80 and 85,793,401.20 is: 128,690,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,584,657.20 : 300,876,985.80 = 85,793,401.20 : x
  2. Step 2: Convert to fraction form
    200,584,657.20/300,876,985.80 = 85,793,401.20/x
  3. Step 3: Cross multiply
    200,584,657.20x = 300,876,985.80 × 85,793,401.20
  4. Step 4: Simplify right side
    200,584,657.20x = 25,813,259,954,586,104
  5. Step 5: Solve for x
    x = 25,813,259,954,586,104/200,584,657.20
  6. Step 6: Final answer
    x = 128,690,101.80

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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.