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Finding the Fourth Proportional to 118,608.29, 163,663.28 and 70,851.50

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Solution

The fourth proportional to 118,608.29, 163,663.28 and 70,851.50 is: 97,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,608.29 : 163,663.28 = 70,851.50 : x
  2. Step 2: Convert to fraction form
    118,608.29/163,663.28 = 70,851.50/x
  3. Step 3: Cross multiply
    118,608.29x = 163,663.28 × 70,851.50
  4. Step 4: Simplify right side
    118,608.29x = 11,595,789,203.51
  5. Step 5: Solve for x
    x = 11,595,789,203.51/118,608.29
  6. Step 6: Final answer
    x = 97,765.42

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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.