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Finding the Fourth Proportional to 75,135.50, 103,669.88 and 44,915.72

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Solution

The fourth proportional to 75,135.50, 103,669.88 and 44,915.72 is: 61,973.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,135.50 : 103,669.88 = 44,915.72 : x
  2. Step 2: Convert to fraction form
    75,135.50/103,669.88 = 44,915.72/x
  3. Step 3: Cross multiply
    75,135.50x = 103,669.88 × 44,915.72
  4. Step 4: Simplify right side
    75,135.50x = 4,656,406,559.59
  5. Step 5: Solve for x
    x = 4,656,406,559.59/75,135.50
  6. Step 6: Final answer
    x = 61,973.46

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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.