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Finding the Fourth Proportional to 101,790,513.20, 142,204,387.60 and 101,790,513.20

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Solution

The fourth proportional to 101,790,513.20, 142,204,387.60 and 101,790,513.20 is: 142,204,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,790,513.20 : 142,204,387.60 = 101,790,513.20 : x
  2. Step 2: Convert to fraction form
    101,790,513.20/142,204,387.60 = 101,790,513.20/x
  3. Step 3: Cross multiply
    101,790,513.20x = 142,204,387.60 × 101,790,513.20
  4. Step 4: Simplify right side
    101,790,513.20x = 14,475,057,593,095,716
  5. Step 5: Solve for x
    x = 14,475,057,593,095,716/101,790,513.20
  6. Step 6: Final answer
    x = 142,204,387.60

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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.