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Finding the Fourth Proportional to 157,755.01, 217,700.26 and 86,134.81

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Solution

The fourth proportional to 157,755.01, 217,700.26 and 86,134.81 is: 118,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,755.01 : 217,700.26 = 86,134.81 : x
  2. Step 2: Convert to fraction form
    157,755.01/217,700.26 = 86,134.81/x
  3. Step 3: Cross multiply
    157,755.01x = 217,700.26 × 86,134.81
  4. Step 4: Simplify right side
    157,755.01x = 18,751,570,532.05
  5. Step 5: Solve for x
    x = 18,751,570,532.05/157,755.01
  6. Step 6: Final answer
    x = 118,865.13

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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.