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Finding the Fourth Proportional to 887,836,805.90, 1,245,012,261.70 and 887,836,805.90

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Solution

The fourth proportional to 887,836,805.90, 1,245,012,261.70 and 887,836,805.90 is: 1,245,012,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,836,805.90 : 1,245,012,261.70 = 887,836,805.90 : x
  2. Step 2: Convert to fraction form
    887,836,805.90/1,245,012,261.70 = 887,836,805.90/x
  3. Step 3: Cross multiply
    887,836,805.90x = 1,245,012,261.70 × 887,836,805.90
  4. Step 4: Simplify right side
    887,836,805.90x = 1,105,367,709,734,062,976
  5. Step 5: Solve for x
    x = 1,105,367,709,734,062,976/887,836,805.90
  6. Step 6: Final answer
    x = 1,245,012,261.70

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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.