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Finding the Fourth Proportional to 46,540.40, 69,810.60 and 29,919.20

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Solution

The fourth proportional to 46,540.40, 69,810.60 and 29,919.20 is: 44,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,540.40 : 69,810.60 = 29,919.20 : x
  2. Step 2: Convert to fraction form
    46,540.40/69,810.60 = 29,919.20/x
  3. Step 3: Cross multiply
    46,540.40x = 69,810.60 × 29,919.20
  4. Step 4: Simplify right side
    46,540.40x = 2,088,677,303.52
  5. Step 5: Solve for x
    x = 2,088,677,303.52/46,540.40
  6. Step 6: Final answer
    x = 44,878.80

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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.