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Finding the Fourth Proportional to 99,263.70, 137,005.50 and 61,056.06

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Solution

The fourth proportional to 99,263.70, 137,005.50 and 61,056.06 is: 84,270.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,263.70 : 137,005.50 = 61,056.06 : x
  2. Step 2: Convert to fraction form
    99,263.70/137,005.50 = 61,056.06/x
  3. Step 3: Cross multiply
    99,263.70x = 137,005.50 × 61,056.06
  4. Step 4: Simplify right side
    99,263.70x = 8,365,016,028.33
  5. Step 5: Solve for x
    x = 8,365,016,028.33/99,263.70
  6. Step 6: Final answer
    x = 84,270.65

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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.