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Finding the Fourth Proportional to 117,685.56, 176,526.81 and 28,939.84

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Solution

The fourth proportional to 117,685.56, 176,526.81 and 28,939.84 is: 43,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,685.56 : 176,526.81 = 28,939.84 : x
  2. Step 2: Convert to fraction form
    117,685.56/176,526.81 = 28,939.84/x
  3. Step 3: Cross multiply
    117,685.56x = 176,526.81 × 28,939.84
  4. Step 4: Simplify right side
    117,685.56x = 5,108,657,637.11
  5. Step 5: Solve for x
    x = 5,108,657,637.11/117,685.56
  6. Step 6: Final answer
    x = 43,409.38

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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.