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Finding the Fourth Proportional to 157,937.78, 217,404.91 and 137,759.52

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Solution

The fourth proportional to 157,937.78, 217,404.91 and 137,759.52 is: 189,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,937.78 : 217,404.91 = 137,759.52 : x
  2. Step 2: Convert to fraction form
    157,937.78/217,404.91 = 137,759.52/x
  3. Step 3: Cross multiply
    157,937.78x = 217,404.91 × 137,759.52
  4. Step 4: Simplify right side
    157,937.78x = 29,949,595,811.81
  5. Step 5: Solve for x
    x = 29,949,595,811.81/157,937.78
  6. Step 6: Final answer
    x = 189,629.08

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1.5x scale

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.