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Finding the Fourth Proportional to 159,937.56, 220,762.70 and 98,702.47

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Solution

The fourth proportional to 159,937.56, 220,762.70 and 98,702.47 is: 136,239.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,937.56 : 220,762.70 = 98,702.47 : x
  2. Step 2: Convert to fraction form
    159,937.56/220,762.70 = 98,702.47/x
  3. Step 3: Cross multiply
    159,937.56x = 220,762.70 × 98,702.47
  4. Step 4: Simplify right side
    159,937.56x = 21,789,824,963.74
  5. Step 5: Solve for x
    x = 21,789,824,963.74/159,937.56
  6. Step 6: Final answer
    x = 136,239.57

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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.