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Finding the Fourth Proportional to 84,911,590.20, 127,367,385.30 and 84,911,590.20

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Solution

The fourth proportional to 84,911,590.20, 127,367,385.30 and 84,911,590.20 is: 127,367,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,911,590.20 : 127,367,385.30 = 84,911,590.20 : x
  2. Step 2: Convert to fraction form
    84,911,590.20/127,367,385.30 = 84,911,590.20/x
  3. Step 3: Cross multiply
    84,911,590.20x = 127,367,385.30 × 84,911,590.20
  4. Step 4: Simplify right side
    84,911,590.20x = 10,814,967,225,439,104
  5. Step 5: Solve for x
    x = 10,814,967,225,439,104/84,911,590.20
  6. Step 6: Final answer
    x = 127,367,385.30

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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.