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Finding the Fourth Proportional to 927,410.90, 1,277,642.12 and 871,609.60

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Solution

The fourth proportional to 927,410.90, 1,277,642.12 and 871,609.60 is: 1,200,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,410.90 : 1,277,642.12 = 871,609.60 : x
  2. Step 2: Convert to fraction form
    927,410.90/1,277,642.12 = 871,609.60/x
  3. Step 3: Cross multiply
    927,410.90x = 1,277,642.12 × 871,609.60
  4. Step 4: Simplify right side
    927,410.90x = 1,113,605,137,156.35
  5. Step 5: Solve for x
    x = 1,113,605,137,156.35/927,410.90
  6. Step 6: Final answer
    x = 1,200,767.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.