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Finding the Fourth Proportional to 110,971.50, 153,141.21 and 60,670.50

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Solution

The fourth proportional to 110,971.50, 153,141.21 and 60,670.50 is: 83,725.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,971.50 : 153,141.21 = 60,670.50 : x
  2. Step 2: Convert to fraction form
    110,971.50/153,141.21 = 60,670.50/x
  3. Step 3: Cross multiply
    110,971.50x = 153,141.21 × 60,670.50
  4. Step 4: Simplify right side
    110,971.50x = 9,291,153,781.31
  5. Step 5: Solve for x
    x = 9,291,153,781.31/110,971.50
  6. Step 6: Final answer
    x = 83,725.59

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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.