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Finding the Fourth Proportional to 80,657,143,668.80, 120,985,715,503.20 and 80,657,143,668.80

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Solution

The fourth proportional to 80,657,143,668.80, 120,985,715,503.20 and 80,657,143,668.80 is: 120,985,715,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657,143,668.80 : 120,985,715,503.20 = 80,657,143,668.80 : x
  2. Step 2: Convert to fraction form
    80,657,143,668.80/120,985,715,503.20 = 80,657,143,668.80/x
  3. Step 3: Cross multiply
    80,657,143,668.80x = 120,985,715,503.20 × 80,657,143,668.80
  4. Step 4: Simplify right side
    80,657,143,668.80x = 9,758,362,237,214,165,827,584
  5. Step 5: Solve for x
    x = 9,758,362,237,214,165,827,584/80,657,143,668.80
  6. Step 6: Final answer
    x = 120,985,715,503.20

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1.5x scale

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.