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Finding the Fourth Proportional to 117,867.99, 162,661.28 and 64,156.49

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Solution

The fourth proportional to 117,867.99, 162,661.28 and 64,156.49 is: 88,537.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,867.99 : 162,661.28 = 64,156.49 : x
  2. Step 2: Convert to fraction form
    117,867.99/162,661.28 = 64,156.49/x
  3. Step 3: Cross multiply
    117,867.99x = 162,661.28 × 64,156.49
  4. Step 4: Simplify right side
    117,867.99x = 10,435,776,783.71
  5. Step 5: Solve for x
    x = 10,435,776,783.71/117,867.99
  6. Step 6: Final answer
    x = 88,537.84

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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.