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Finding the Fourth Proportional to 119,065,718.80, 178,598,578.20 and 82,786,013.20

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Solution

The fourth proportional to 119,065,718.80, 178,598,578.20 and 82,786,013.20 is: 124,179,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,065,718.80 : 178,598,578.20 = 82,786,013.20 : x
  2. Step 2: Convert to fraction form
    119,065,718.80/178,598,578.20 = 82,786,013.20/x
  3. Step 3: Cross multiply
    119,065,718.80x = 178,598,578.20 × 82,786,013.20
  4. Step 4: Simplify right side
    119,065,718.80x = 14,785,464,252,366,432
  5. Step 5: Solve for x
    x = 14,785,464,252,366,432/119,065,718.80
  6. Step 6: Final answer
    x = 124,179,019.80

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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.