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Finding the Fourth Proportional to 103,645.98, 155,483.56 and 51,055.92

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Solution

The fourth proportional to 103,645.98, 155,483.56 and 51,055.92 is: 76,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,645.98 : 155,483.56 = 51,055.92 : x
  2. Step 2: Convert to fraction form
    103,645.98/155,483.56 = 51,055.92/x
  3. Step 3: Cross multiply
    103,645.98x = 155,483.56 × 51,055.92
  4. Step 4: Simplify right side
    103,645.98x = 7,938,356,200.68
  5. Step 5: Solve for x
    x = 7,938,356,200.68/103,645.98
  6. Step 6: Final answer
    x = 76,591.07

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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.