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Finding the Fourth Proportional to 117,555.93, 176,363.73 and 54,421.63

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Solution

The fourth proportional to 117,555.93, 176,363.73 and 54,421.63 is: 81,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,555.93 : 176,363.73 = 54,421.63 : x
  2. Step 2: Convert to fraction form
    117,555.93/176,363.73 = 54,421.63/x
  3. Step 3: Cross multiply
    117,555.93x = 176,363.73 × 54,421.63
  4. Step 4: Simplify right side
    117,555.93x = 9,598,001,218.57
  5. Step 5: Solve for x
    x = 9,598,001,218.57/117,555.93
  6. Step 6: Final answer
    x = 81,646.25

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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.