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Finding the Fourth Proportional to 638,537,352.60, 957,806,028.90 and 638,537,352.60

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Solution

The fourth proportional to 638,537,352.60, 957,806,028.90 and 638,537,352.60 is: 957,806,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,537,352.60 : 957,806,028.90 = 638,537,352.60 : x
  2. Step 2: Convert to fraction form
    638,537,352.60/957,806,028.90 = 638,537,352.60/x
  3. Step 3: Cross multiply
    638,537,352.60x = 957,806,028.90 × 638,537,352.60
  4. Step 4: Simplify right side
    638,537,352.60x = 611,594,925,998,125,056
  5. Step 5: Solve for x
    x = 611,594,925,998,125,056/638,537,352.60
  6. Step 6: Final answer
    x = 957,806,028.90

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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.