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Finding the Fourth Proportional to 117,507.76, 176,243.41 and 38,621.45

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Solution

The fourth proportional to 117,507.76, 176,243.41 and 38,621.45 is: 57,926.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,507.76 : 176,243.41 = 38,621.45 : x
  2. Step 2: Convert to fraction form
    117,507.76/176,243.41 = 38,621.45/x
  3. Step 3: Cross multiply
    117,507.76x = 176,243.41 × 38,621.45
  4. Step 4: Simplify right side
    117,507.76x = 6,806,776,047.14
  5. Step 5: Solve for x
    x = 6,806,776,047.14/117,507.76
  6. Step 6: Final answer
    x = 57,926.18

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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.