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Finding the Fourth Proportional to 887,263,985.20, 1,330,895,977.80 and 887,263,985.20

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Solution

The fourth proportional to 887,263,985.20, 1,330,895,977.80 and 887,263,985.20 is: 1,330,895,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,263,985.20 : 1,330,895,977.80 = 887,263,985.20 : x
  2. Step 2: Convert to fraction form
    887,263,985.20/1,330,895,977.80 = 887,263,985.20/x
  3. Step 3: Cross multiply
    887,263,985.20x = 1,330,895,977.80 × 887,263,985.20
  4. Step 4: Simplify right side
    887,263,985.20x = 1,180,856,069,149,478,656
  5. Step 5: Solve for x
    x = 1,180,856,069,149,478,656/887,263,985.20
  6. Step 6: Final answer
    x = 1,330,895,977.80

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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.