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Finding the Fourth Proportional to 118,987.48, 164,192.27 and 67,990.08

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Solution

The fourth proportional to 118,987.48, 164,192.27 and 67,990.08 is: 93,820.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,987.48 : 164,192.27 = 67,990.08 : x
  2. Step 2: Convert to fraction form
    118,987.48/164,192.27 = 67,990.08/x
  3. Step 3: Cross multiply
    118,987.48x = 164,192.27 × 67,990.08
  4. Step 4: Simplify right side
    118,987.48x = 11,163,445,848.45
  5. Step 5: Solve for x
    x = 11,163,445,848.45/118,987.48
  6. Step 6: Final answer
    x = 93,820.34

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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.