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Finding the Fourth Proportional to 115,758.40, 173,647.20 and 36,870.40

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Solution

The fourth proportional to 115,758.40, 173,647.20 and 36,870.40 is: 55,308.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,758.40 : 173,647.20 = 36,870.40 : x
  2. Step 2: Convert to fraction form
    115,758.40/173,647.20 = 36,870.40/x
  3. Step 3: Cross multiply
    115,758.40x = 173,647.20 × 36,870.40
  4. Step 4: Simplify right side
    115,758.40x = 6,402,441,722.88
  5. Step 5: Solve for x
    x = 6,402,441,722.88/115,758.40
  6. Step 6: Final answer
    x = 55,308.66

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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.