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Finding the Fourth Proportional to 99,276.53, 137,002.67 and 53,954.51

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Solution

The fourth proportional to 99,276.53, 137,002.67 and 53,954.51 is: 74,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,276.53 : 137,002.67 = 53,954.51 : x
  2. Step 2: Convert to fraction form
    99,276.53/137,002.67 = 53,954.51/x
  3. Step 3: Cross multiply
    99,276.53x = 137,002.67 × 53,954.51
  4. Step 4: Simplify right side
    99,276.53x = 7,391,910,973.76
  5. Step 5: Solve for x
    x = 7,391,910,973.76/99,276.53
  6. Step 6: Final answer
    x = 74,457.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.