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Finding the Fourth Proportional to 46,994.73, 70,495.32 and 18,915

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Solution

The fourth proportional to 46,994.73, 70,495.32 and 18,915 is: 28,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,994.73 : 70,495.32 = 18,915 : x
  2. Step 2: Convert to fraction form
    46,994.73/70,495.32 = 18,915/x
  3. Step 3: Cross multiply
    46,994.73x = 70,495.32 × 18,915
  4. Step 4: Simplify right side
    46,994.73x = 1,333,418,977.80
  5. Step 5: Solve for x
    x = 1,333,418,977.80/46,994.73
  6. Step 6: Final answer
    x = 28,373.80

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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.