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Finding the Fourth Proportional to 1,266,121,701.88, 1,747,258,207.56 and 701,616,012.88

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Solution

The fourth proportional to 1,266,121,701.88, 1,747,258,207.56 and 701,616,012.88 is: 968,235,782.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,121,701.88 : 1,747,258,207.56 = 701,616,012.88 : x
  2. Step 2: Convert to fraction form
    1,266,121,701.88/1,747,258,207.56 = 701,616,012.88/x
  3. Step 3: Cross multiply
    1,266,121,701.88x = 1,747,258,207.56 × 701,616,012.88
  4. Step 4: Simplify right side
    1,266,121,701.88x = 1,225,904,337,060,102,656
  5. Step 5: Solve for x
    x = 1,225,904,337,060,102,656/1,266,121,701.88
  6. Step 6: Final answer
    x = 968,235,782.74

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.