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Finding the Fourth Proportional to 77,928.66, 116,710.74 and 38,358.54

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Solution

The fourth proportional to 77,928.66, 116,710.74 and 38,358.54 is: 57,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928.66 : 116,710.74 = 38,358.54 : x
  2. Step 2: Convert to fraction form
    77,928.66/116,710.74 = 38,358.54/x
  3. Step 3: Cross multiply
    77,928.66x = 116,710.74 × 38,358.54
  4. Step 4: Simplify right side
    77,928.66x = 4,476,853,588.72
  5. Step 5: Solve for x
    x = 4,476,853,588.72/77,928.66
  6. Step 6: Final answer
    x = 57,448.10

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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.