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Finding the Fourth Proportional to 5,074,508.64, 7,611,788.49 and 1,287,992.73

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Solution

The fourth proportional to 5,074,508.64, 7,611,788.49 and 1,287,992.73 is: 1,931,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,074,508.64 : 7,611,788.49 = 1,287,992.73 : x
  2. Step 2: Convert to fraction form
    5,074,508.64/7,611,788.49 = 1,287,992.73/x
  3. Step 3: Cross multiply
    5,074,508.64x = 7,611,788.49 × 1,287,992.73
  4. Step 4: Simplify right side
    5,074,508.64x = 9,803,928,237,417.68
  5. Step 5: Solve for x
    x = 9,803,928,237,417.68/5,074,508.64
  6. Step 6: Final answer
    x = 1,931,995.57

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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.