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Finding the Fourth Proportional to 117,054.55, 161,534.95 and 63,340.48

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Solution

The fourth proportional to 117,054.55, 161,534.95 and 63,340.48 is: 87,409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,054.55 : 161,534.95 = 63,340.48 : x
  2. Step 2: Convert to fraction form
    117,054.55/161,534.95 = 63,340.48/x
  3. Step 3: Cross multiply
    117,054.55x = 161,534.95 × 63,340.48
  4. Step 4: Simplify right side
    117,054.55x = 10,231,701,269.78
  5. Step 5: Solve for x
    x = 10,231,701,269.78/117,054.55
  6. Step 6: Final answer
    x = 87,409.68

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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.