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Finding the Fourth Proportional to 157,652.20, 236,132.70 and 136,916.20

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Solution

The fourth proportional to 157,652.20, 236,132.70 and 136,916.20 is: 205,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,652.20 : 236,132.70 = 136,916.20 : x
  2. Step 2: Convert to fraction form
    157,652.20/236,132.70 = 136,916.20/x
  3. Step 3: Cross multiply
    157,652.20x = 236,132.70 × 136,916.20
  4. Step 4: Simplify right side
    157,652.20x = 32,330,391,979.74
  5. Step 5: Solve for x
    x = 32,330,391,979.74/157,652.20
  6. Step 6: Final answer
    x = 205,074.16

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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.