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Finding the Fourth Proportional to 727,889,701.20, 1,091,834,551.80 and 727,889,701.20

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Solution

The fourth proportional to 727,889,701.20, 1,091,834,551.80 and 727,889,701.20 is: 1,091,834,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,889,701.20 : 1,091,834,551.80 = 727,889,701.20 : x
  2. Step 2: Convert to fraction form
    727,889,701.20/1,091,834,551.80 = 727,889,701.20/x
  3. Step 3: Cross multiply
    727,889,701.20x = 1,091,834,551.80 × 727,889,701.20
  4. Step 4: Simplify right side
    727,889,701.20x = 794,735,125,669,537,920
  5. Step 5: Solve for x
    x = 794,735,125,669,537,920/727,889,701.20
  6. Step 6: Final answer
    x = 1,091,834,551.80

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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.