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Finding the Fourth Proportional to 105,240.80, 157,722.96 and 49,852.64

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Solution

The fourth proportional to 105,240.80, 157,722.96 and 49,852.64 is: 74,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,240.80 : 157,722.96 = 49,852.64 : x
  2. Step 2: Convert to fraction form
    105,240.80/157,722.96 = 49,852.64/x
  3. Step 3: Cross multiply
    105,240.80x = 157,722.96 × 49,852.64
  4. Step 4: Simplify right side
    105,240.80x = 7,862,905,944.61
  5. Step 5: Solve for x
    x = 7,862,905,944.61/105,240.80
  6. Step 6: Final answer
    x = 74,713.48

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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.