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Finding the Fourth Proportional to 118,833.40, 163,974.47 and 71,069.32

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Solution

The fourth proportional to 118,833.40, 163,974.47 and 71,069.32 is: 98,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.40 : 163,974.47 = 71,069.32 : x
  2. Step 2: Convert to fraction form
    118,833.40/163,974.47 = 71,069.32/x
  3. Step 3: Cross multiply
    118,833.40x = 163,974.47 × 71,069.32
  4. Step 4: Simplify right side
    118,833.40x = 11,653,554,080.26
  5. Step 5: Solve for x
    x = 11,653,554,080.26/118,833.40
  6. Step 6: Final answer
    x = 98,066.32

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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.