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Finding the Fourth Proportional to 99,672.80, 149,566.80 and 37,349.60

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Solution

The fourth proportional to 99,672.80, 149,566.80 and 37,349.60 is: 56,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,672.80 : 149,566.80 = 37,349.60 : x
  2. Step 2: Convert to fraction form
    99,672.80/149,566.80 = 37,349.60/x
  3. Step 3: Cross multiply
    99,672.80x = 149,566.80 × 37,349.60
  4. Step 4: Simplify right side
    99,672.80x = 5,586,260,153.28
  5. Step 5: Solve for x
    x = 5,586,260,153.28/99,672.80
  6. Step 6: Final answer
    x = 56,045.98

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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.