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Finding the Fourth Proportional to 212,603,779.20, 297,846,844.80 and 212,603,779.20

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Solution

The fourth proportional to 212,603,779.20, 297,846,844.80 and 212,603,779.20 is: 297,846,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,603,779.20 : 297,846,844.80 = 212,603,779.20 : x
  2. Step 2: Convert to fraction form
    212,603,779.20/297,846,844.80 = 212,603,779.20/x
  3. Step 3: Cross multiply
    212,603,779.20x = 297,846,844.80 × 212,603,779.20
  4. Step 4: Simplify right side
    212,603,779.20x = 63,323,364,827,275,864
  5. Step 5: Solve for x
    x = 63,323,364,827,275,864/212,603,779.20
  6. Step 6: Final answer
    x = 297,846,844.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.