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Finding the Fourth Proportional to 718,974,920.40, 1,078,462,380.60 and 718,974,920.40

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Solution

The fourth proportional to 718,974,920.40, 1,078,462,380.60 and 718,974,920.40 is: 1,078,462,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,974,920.40 : 1,078,462,380.60 = 718,974,920.40 : x
  2. Step 2: Convert to fraction form
    718,974,920.40/1,078,462,380.60 = 718,974,920.40/x
  3. Step 3: Cross multiply
    718,974,920.40x = 1,078,462,380.60 × 718,974,920.40
  4. Step 4: Simplify right side
    718,974,920.40x = 775,387,404,246,279,424
  5. Step 5: Solve for x
    x = 775,387,404,246,279,424/718,974,920.40
  6. Step 6: Final answer
    x = 1,078,462,380.60

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1.5x scale

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.