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Finding the Fourth Proportional to 887,263,947.20, 1,330,895,920.80 and 887,263,947.20

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Solution

The fourth proportional to 887,263,947.20, 1,330,895,920.80 and 887,263,947.20 is: 1,330,895,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,263,947.20 : 1,330,895,920.80 = 887,263,947.20 : x
  2. Step 2: Convert to fraction form
    887,263,947.20/1,330,895,920.80 = 887,263,947.20/x
  3. Step 3: Cross multiply
    887,263,947.20x = 1,330,895,920.80 × 887,263,947.20
  4. Step 4: Simplify right side
    887,263,947.20x = 1,180,855,968,001,386,496
  5. Step 5: Solve for x
    x = 1,180,855,968,001,386,496/887,263,947.20
  6. Step 6: Final answer
    x = 1,330,895,920.80

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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.