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Finding the Fourth Proportional to 99,602.55, 149,450.46 and 49,686.51

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Solution

The fourth proportional to 99,602.55, 149,450.46 and 49,686.51 is: 74,553.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,602.55 : 149,450.46 = 49,686.51 : x
  2. Step 2: Convert to fraction form
    99,602.55/149,450.46 = 49,686.51/x
  3. Step 3: Cross multiply
    99,602.55x = 149,450.46 × 49,686.51
  4. Step 4: Simplify right side
    99,602.55x = 7,425,671,775.29
  5. Step 5: Solve for x
    x = 7,425,671,775.29/99,602.55
  6. Step 6: Final answer
    x = 74,553.03

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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.