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Finding the Fourth Proportional to 80,657,165,809.80, 120,985,748,714.70 and 80,657,165,809.80

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Solution

The fourth proportional to 80,657,165,809.80, 120,985,748,714.70 and 80,657,165,809.80 is: 120,985,748,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,165,809.80 : 120,985,748,714.70 = 80,657,165,809.80 : x
  2. Step 2: Convert to fraction form
    80,657,165,809.80/120,985,748,714.70 = 80,657,165,809.80/x
  3. Step 3: Cross multiply
    80,657,165,809.80x = 120,985,748,714.70 × 80,657,165,809.80
  4. Step 4: Simplify right side
    80,657,165,809.80x = 9,758,367,594,704,355,196,928
  5. Step 5: Solve for x
    x = 9,758,367,594,704,355,196,928/80,657,165,809.80
  6. Step 6: Final answer
    x = 120,985,748,714.70

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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.