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Finding the Fourth Proportional to 46,920.68, 70,385.60 and 13,641

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Solution

The fourth proportional to 46,920.68, 70,385.60 and 13,641 is: 20,462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,920.68 : 70,385.60 = 13,641 : x
  2. Step 2: Convert to fraction form
    46,920.68/70,385.60 = 13,641/x
  3. Step 3: Cross multiply
    46,920.68x = 70,385.60 × 13,641
  4. Step 4: Simplify right side
    46,920.68x = 960,129,969.60
  5. Step 5: Solve for x
    x = 960,129,969.60/46,920.68
  6. Step 6: Final answer
    x = 20,462.83

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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.