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Finding the Fourth Proportional to 525,643,404.80, 788,465,107.20 and 525,643,404.80

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Solution

The fourth proportional to 525,643,404.80, 788,465,107.20 and 525,643,404.80 is: 788,465,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,643,404.80 : 788,465,107.20 = 525,643,404.80 : x
  2. Step 2: Convert to fraction form
    525,643,404.80/788,465,107.20 = 525,643,404.80/x
  3. Step 3: Cross multiply
    525,643,404.80x = 788,465,107.20 × 525,643,404.80
  4. Step 4: Simplify right side
    525,643,404.80x = 414,451,483,514,605,056
  5. Step 5: Solve for x
    x = 414,451,483,514,605,056/525,643,404.80
  6. Step 6: Final answer
    x = 788,465,107.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.