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Finding the Fourth Proportional to 556,536,820.80, 834,553,288.80 and 211,375,732.80

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Solution

The fourth proportional to 556,536,820.80, 834,553,288.80 and 211,375,732.80 is: 316,967,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,536,820.80 : 834,553,288.80 = 211,375,732.80 : x
  2. Step 2: Convert to fraction form
    556,536,820.80/834,553,288.80 = 211,375,732.80/x
  3. Step 3: Cross multiply
    556,536,820.80x = 834,553,288.80 × 211,375,732.80
  4. Step 4: Simplify right side
    556,536,820.80x = 176,404,312,980,750,048
  5. Step 5: Solve for x
    x = 176,404,312,980,750,048/556,536,820.80
  6. Step 6: Final answer
    x = 316,967,910.10

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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.