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Finding the Fourth Proportional to 118,701.06, 163,801.31 and 64,975.88

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Solution

The fourth proportional to 118,701.06, 163,801.31 and 64,975.88 is: 89,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.06 : 163,801.31 = 64,975.88 : x
  2. Step 2: Convert to fraction form
    118,701.06/163,801.31 = 64,975.88/x
  3. Step 3: Cross multiply
    118,701.06x = 163,801.31 × 64,975.88
  4. Step 4: Simplify right side
    118,701.06x = 10,643,134,262.40
  5. Step 5: Solve for x
    x = 10,643,134,262.40/118,701.06
  6. Step 6: Final answer
    x = 89,663.35

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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.