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Finding the Fourth Proportional to 557,730,522, 834,980,238 and 420,135,612.48

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Solution

The fourth proportional to 557,730,522, 834,980,238 and 420,135,612.48 is: 628,986,436.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,730,522 : 834,980,238 = 420,135,612.48 : x
  2. Step 2: Convert to fraction form
    557,730,522/834,980,238 = 420,135,612.48/x
  3. Step 3: Cross multiply
    557,730,522x = 834,980,238 × 420,135,612.48
  4. Step 4: Simplify right side
    557,730,522x = 350,804,933,700,826,176
  5. Step 5: Solve for x
    x = 350,804,933,700,826,176/557,730,522
  6. Step 6: Final answer
    x = 628,986,436.75

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