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Finding the Fourth Proportional to 100,985.72, 151,506.64 and 44,064.60

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Solution

The fourth proportional to 100,985.72, 151,506.64 and 44,064.60 is: 66,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,985.72 : 151,506.64 = 44,064.60 : x
  2. Step 2: Convert to fraction form
    100,985.72/151,506.64 = 44,064.60/x
  3. Step 3: Cross multiply
    100,985.72x = 151,506.64 × 44,064.60
  4. Step 4: Simplify right side
    100,985.72x = 6,676,079,488.94
  5. Step 5: Solve for x
    x = 6,676,079,488.94/100,985.72
  6. Step 6: Final answer
    x = 66,109.14

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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.