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Finding the Fourth Proportional to 127,053.16, 190,693.98 and 67,939.36

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Solution

The fourth proportional to 127,053.16, 190,693.98 and 67,939.36 is: 101,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,053.16 : 190,693.98 = 67,939.36 : x
  2. Step 2: Convert to fraction form
    127,053.16/190,693.98 = 67,939.36/x
  3. Step 3: Cross multiply
    127,053.16x = 190,693.98 × 67,939.36
  4. Step 4: Simplify right side
    127,053.16x = 12,955,626,957.05
  5. Step 5: Solve for x
    x = 12,955,626,957.05/127,053.16
  6. Step 6: Final answer
    x = 101,970.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.