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Finding the Fourth Proportional to 73,117.80, 109,482.30 and 46,679.40

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Solution

The fourth proportional to 73,117.80, 109,482.30 and 46,679.40 is: 69,894.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,117.80 : 109,482.30 = 46,679.40 : x
  2. Step 2: Convert to fraction form
    73,117.80/109,482.30 = 46,679.40/x
  3. Step 3: Cross multiply
    73,117.80x = 109,482.30 × 46,679.40
  4. Step 4: Simplify right side
    73,117.80x = 5,110,568,074.62
  5. Step 5: Solve for x
    x = 5,110,568,074.62/73,117.80
  6. Step 6: Final answer
    x = 69,894.99

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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.