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Finding the Fourth Proportional to 995,329,542.80, 1,390,236,497.20 and 995,329,542.80

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Solution

The fourth proportional to 995,329,542.80, 1,390,236,497.20 and 995,329,542.80 is: 1,390,236,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,329,542.80 : 1,390,236,497.20 = 995,329,542.80 : x
  2. Step 2: Convert to fraction form
    995,329,542.80/1,390,236,497.20 = 995,329,542.80/x
  3. Step 3: Cross multiply
    995,329,542.80x = 1,390,236,497.20 × 995,329,542.80
  4. Step 4: Simplify right side
    995,329,542.80x = 1,383,743,457,141,949,440
  5. Step 5: Solve for x
    x = 1,383,743,457,141,949,440/995,329,542.80
  6. Step 6: Final answer
    x = 1,390,236,497.20

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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.