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Finding the Fourth Proportional to 573,352,511.64, 789,414,282.16 and 520,985,201.20

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Solution

The fourth proportional to 573,352,511.64, 789,414,282.16 and 520,985,201.20 is: 717,312,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,352,511.64 : 789,414,282.16 = 520,985,201.20 : x
  2. Step 2: Convert to fraction form
    573,352,511.64/789,414,282.16 = 520,985,201.20/x
  3. Step 3: Cross multiply
    573,352,511.64x = 789,414,282.16 × 520,985,201.20
  4. Step 4: Simplify right side
    573,352,511.64x = 411,273,158,621,281,152
  5. Step 5: Solve for x
    x = 411,273,158,621,281,152/573,352,511.64
  6. Step 6: Final answer
    x = 717,312,910.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.