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Finding the Fourth Proportional to 77,327.72, 106,763.64 and 59,390.64

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Solution

The fourth proportional to 77,327.72, 106,763.64 and 59,390.64 is: 81,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,327.72 : 106,763.64 = 59,390.64 : x
  2. Step 2: Convert to fraction form
    77,327.72/106,763.64 = 59,390.64/x
  3. Step 3: Cross multiply
    77,327.72x = 106,763.64 × 59,390.64
  4. Step 4: Simplify right side
    77,327.72x = 6,340,760,908.33
  5. Step 5: Solve for x
    x = 6,340,760,908.33/77,327.72
  6. Step 6: Final answer
    x = 81,998.55

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1.5x scale

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.