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Finding the Fourth Proportional to 196,572,701.80, 294,894,482.10 and 81,568,869.40

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Solution

The fourth proportional to 196,572,701.80, 294,894,482.10 and 81,568,869.40 is: 122,368,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,572,701.80 : 294,894,482.10 = 81,568,869.40 : x
  2. Step 2: Convert to fraction form
    196,572,701.80/294,894,482.10 = 81,568,869.40/x
  3. Step 3: Cross multiply
    196,572,701.80x = 294,894,482.10 × 81,568,869.40
  4. Step 4: Simplify right side
    196,572,701.80x = 24,054,209,497,195,540
  5. Step 5: Solve for x
    x = 24,054,209,497,195,540/196,572,701.80
  6. Step 6: Final answer
    x = 122,368,005.71

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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.