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Finding the Fourth Proportional to 115,756.60, 173,634.90 and 36,870.20

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Solution

The fourth proportional to 115,756.60, 173,634.90 and 36,870.20 is: 55,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,756.60 : 173,634.90 = 36,870.20 : x
  2. Step 2: Convert to fraction form
    115,756.60/173,634.90 = 36,870.20/x
  3. Step 3: Cross multiply
    115,756.60x = 173,634.90 × 36,870.20
  4. Step 4: Simplify right side
    115,756.60x = 6,401,953,489.98
  5. Step 5: Solve for x
    x = 6,401,953,489.98/115,756.60
  6. Step 6: Final answer
    x = 55,305.30

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1.5x scale

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.