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Finding the Fourth Proportional to 157,817.80, 236,726.70 and 98,768.80

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Solution

The fourth proportional to 157,817.80, 236,726.70 and 98,768.80 is: 148,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,817.80 : 236,726.70 = 98,768.80 : x
  2. Step 2: Convert to fraction form
    157,817.80/236,726.70 = 98,768.80/x
  3. Step 3: Cross multiply
    157,817.80x = 236,726.70 × 98,768.80
  4. Step 4: Simplify right side
    157,817.80x = 23,381,212,086.96
  5. Step 5: Solve for x
    x = 23,381,212,086.96/157,817.80
  6. Step 6: Final answer
    x = 148,153.20

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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.