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Finding the Fourth Proportional to 157,535.79, 217,396.76 and 85,911.54

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Solution

The fourth proportional to 157,535.79, 217,396.76 and 85,911.54 is: 118,556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,535.79 : 217,396.76 = 85,911.54 : x
  2. Step 2: Convert to fraction form
    157,535.79/217,396.76 = 85,911.54/x
  3. Step 3: Cross multiply
    157,535.79x = 217,396.76 × 85,911.54
  4. Step 4: Simplify right side
    157,535.79x = 18,676,889,681.07
  5. Step 5: Solve for x
    x = 18,676,889,681.07/157,535.79
  6. Step 6: Final answer
    x = 118,556.49

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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.