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Finding the Fourth Proportional to 157,646.70, 236,124.45 and 136,910.70

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Solution

The fourth proportional to 157,646.70, 236,124.45 and 136,910.70 is: 205,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,646.70 : 236,124.45 = 136,910.70 : x
  2. Step 2: Convert to fraction form
    157,646.70/236,124.45 = 136,910.70/x
  3. Step 3: Cross multiply
    157,646.70x = 236,124.45 × 136,910.70
  4. Step 4: Simplify right side
    157,646.70x = 32,327,963,736.62
  5. Step 5: Solve for x
    x = 32,327,963,736.62/157,646.70
  6. Step 6: Final answer
    x = 205,065.91

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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.