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Finding the Fourth Proportional to 524,657,619.40, 786,986,429.10 and 251,962,630.60

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Solution

The fourth proportional to 524,657,619.40, 786,986,429.10 and 251,962,630.60 is: 377,943,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,657,619.40 : 786,986,429.10 = 251,962,630.60 : x
  2. Step 2: Convert to fraction form
    524,657,619.40/786,986,429.10 = 251,962,630.60/x
  3. Step 3: Cross multiply
    524,657,619.40x = 786,986,429.10 × 251,962,630.60
  4. Step 4: Simplify right side
    524,657,619.40x = 198,291,170,922,536,384
  5. Step 5: Solve for x
    x = 198,291,170,922,536,384/524,657,619.40
  6. Step 6: Final answer
    x = 377,943,945.90

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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.