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Finding the Fourth Proportional to 10,961,763.60, 16,442,645.40 and 10,439,216.40

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Solution

The fourth proportional to 10,961,763.60, 16,442,645.40 and 10,439,216.40 is: 15,658,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961,763.60 : 16,442,645.40 = 10,439,216.40 : x
  2. Step 2: Convert to fraction form
    10,961,763.60/16,442,645.40 = 10,439,216.40/x
  3. Step 3: Cross multiply
    10,961,763.60x = 16,442,645.40 × 10,439,216.40
  4. Step 4: Simplify right side
    10,961,763.60x = 171,648,333,519,064.56
  5. Step 5: Solve for x
    x = 171,648,333,519,064.56/10,961,763.60
  6. Step 6: Final answer
    x = 15,658,824.60

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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.