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Finding the Fourth Proportional to 680,031,092.80, 953,857,515.20 and 680,031,092.80

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Solution

The fourth proportional to 680,031,092.80, 953,857,515.20 and 680,031,092.80 is: 953,857,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,031,092.80 : 953,857,515.20 = 680,031,092.80 : x
  2. Step 2: Convert to fraction form
    680,031,092.80/953,857,515.20 = 680,031,092.80/x
  3. Step 3: Cross multiply
    680,031,092.80x = 953,857,515.20 × 680,031,092.80
  4. Step 4: Simplify right side
    680,031,092.80x = 648,652,768,436,948,608
  5. Step 5: Solve for x
    x = 648,652,768,436,948,608/680,031,092.80
  6. Step 6: Final answer
    x = 953,857,515.20

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1.5x scale

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.