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Finding the Fourth Proportional to 2,916,977.68, 4,375,466.46 and 787,061.74

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Solution

The fourth proportional to 2,916,977.68, 4,375,466.46 and 787,061.74 is: 1,180,592.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916,977.68 : 4,375,466.46 = 787,061.74 : x
  2. Step 2: Convert to fraction form
    2,916,977.68/4,375,466.46 = 787,061.74/x
  3. Step 3: Cross multiply
    2,916,977.68x = 4,375,466.46 × 787,061.74
  4. Step 4: Simplify right side
    2,916,977.68x = 3,443,762,245,319.24
  5. Step 5: Solve for x
    x = 3,443,762,245,319.24/2,916,977.68
  6. Step 6: Final answer
    x = 1,180,592.59

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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.