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Finding the Fourth Proportional to 127,751.49, 191,657.19 and 39,005.01

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Solution

The fourth proportional to 127,751.49, 191,657.19 and 39,005.01 is: 58,516.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,751.49 : 191,657.19 = 39,005.01 : x
  2. Step 2: Convert to fraction form
    127,751.49/191,657.19 = 39,005.01/x
  3. Step 3: Cross multiply
    127,751.49x = 191,657.19 × 39,005.01
  4. Step 4: Simplify right side
    127,751.49x = 7,475,590,612.52
  5. Step 5: Solve for x
    x = 7,475,590,612.52/127,751.49
  6. Step 6: Final answer
    x = 58,516.66

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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.