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Finding the Fourth Proportional to 157,573.69, 217,453.08 and 85,954.03

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Solution

The fourth proportional to 157,573.69, 217,453.08 and 85,954.03 is: 118,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,573.69 : 217,453.08 = 85,954.03 : x
  2. Step 2: Convert to fraction form
    157,573.69/217,453.08 = 85,954.03/x
  3. Step 3: Cross multiply
    157,573.69x = 217,453.08 × 85,954.03
  4. Step 4: Simplify right side
    157,573.69x = 18,690,968,561.91
  5. Step 5: Solve for x
    x = 18,690,968,561.91/157,573.69
  6. Step 6: Final answer
    x = 118,617.32

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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.