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Finding the Fourth Proportional to 117,987.48, 162,681.71 and 96,397.65

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Solution

The fourth proportional to 117,987.48, 162,681.71 and 96,397.65 is: 132,913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,987.48 : 162,681.71 = 96,397.65 : x
  2. Step 2: Convert to fraction form
    117,987.48/162,681.71 = 96,397.65/x
  3. Step 3: Cross multiply
    117,987.48x = 162,681.71 × 96,397.65
  4. Step 4: Simplify right side
    117,987.48x = 15,682,134,059.99
  5. Step 5: Solve for x
    x = 15,682,134,059.99/117,987.48
  6. Step 6: Final answer
    x = 132,913.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.