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Finding the Fourth Proportional to 75,128.66, 103,670.36 and 44,907.98

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Solution

The fourth proportional to 75,128.66, 103,670.36 and 44,907.98 is: 61,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.66 : 103,670.36 = 44,907.98 : x
  2. Step 2: Convert to fraction form
    75,128.66/103,670.36 = 44,907.98/x
  3. Step 3: Cross multiply
    75,128.66x = 103,670.36 × 44,907.98
  4. Step 4: Simplify right side
    75,128.66x = 4,655,626,453.47
  5. Step 5: Solve for x
    x = 4,655,626,453.47/75,128.66
  6. Step 6: Final answer
    x = 61,968.71

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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.