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Finding the Fourth Proportional to 157,773.88, 217,729.74 and 86,154.76

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Solution

The fourth proportional to 157,773.88, 217,729.74 and 86,154.76 is: 118,894.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,773.88 : 217,729.74 = 86,154.76 : x
  2. Step 2: Convert to fraction form
    157,773.88/217,729.74 = 86,154.76/x
  3. Step 3: Cross multiply
    157,773.88x = 217,729.74 × 86,154.76
  4. Step 4: Simplify right side
    157,773.88x = 18,758,453,494.56
  5. Step 5: Solve for x
    x = 18,758,453,494.56/157,773.88
  6. Step 6: Final answer
    x = 118,894.54

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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.