Home / 128,690,358,821.32-193,078,980,045.66-56,969,979,805

Finding the Fourth Proportional to 128,690,358,821.32, 193,078,980,045.66 and 56,969,979,805

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Solution

The fourth proportional to 128,690,358,821.32, 193,078,980,045.66 and 56,969,979,805 is: 85,474,200,979.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,690,358,821.32 : 193,078,980,045.66 = 56,969,979,805 : x
  2. Step 2: Convert to fraction form
    128,690,358,821.32/193,078,980,045.66 = 56,969,979,805/x
  3. Step 3: Cross multiply
    128,690,358,821.32x = 193,078,980,045.66 × 56,969,979,805
  4. Step 4: Simplify right side
    128,690,358,821.32x = 10,999,705,593,971,247,939,584
  5. Step 5: Solve for x
    x = 10,999,705,593,971,247,939,584/128,690,358,821.32
  6. Step 6: Final answer
    x = 85,474,200,979.14

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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.