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Finding the Fourth Proportional to 435,639,139.20, 610,348,291.20 and 435,639,139.20

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Solution

The fourth proportional to 435,639,139.20, 610,348,291.20 and 435,639,139.20 is: 610,348,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,639,139.20 : 610,348,291.20 = 435,639,139.20 : x
  2. Step 2: Convert to fraction form
    435,639,139.20/610,348,291.20 = 435,639,139.20/x
  3. Step 3: Cross multiply
    435,639,139.20x = 610,348,291.20 × 435,639,139.20
  4. Step 4: Simplify right side
    435,639,139.20x = 265,891,604,190,558,944
  5. Step 5: Solve for x
    x = 265,891,604,190,558,944/435,639,139.20
  6. Step 6: Final answer
    x = 610,348,291.20

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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.