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Finding the Fourth Proportional to 887,681,388.20, 1,245,474,921.40 and 887,681,388.20

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Solution

The fourth proportional to 887,681,388.20, 1,245,474,921.40 and 887,681,388.20 is: 1,245,474,921.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,681,388.20 : 1,245,474,921.40 = 887,681,388.20 : x
  2. Step 2: Convert to fraction form
    887,681,388.20/1,245,474,921.40 = 887,681,388.20/x
  3. Step 3: Cross multiply
    887,681,388.20x = 1,245,474,921.40 × 887,681,388.20
  4. Step 4: Simplify right side
    887,681,388.20x = 1,105,584,907,196,638,080
  5. Step 5: Solve for x
    x = 1,105,584,907,196,638,080/887,681,388.20
  6. Step 6: Final answer
    x = 1,245,474,921.40

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Double scale
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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.