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Finding the Fourth Proportional to 157,735.86, 217,674.90 and 86,115.06

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Solution

The fourth proportional to 157,735.86, 217,674.90 and 86,115.06 is: 118,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,735.86 : 217,674.90 = 86,115.06 : x
  2. Step 2: Convert to fraction form
    157,735.86/217,674.90 = 86,115.06/x
  3. Step 3: Cross multiply
    157,735.86x = 217,674.90 × 86,115.06
  4. Step 4: Simplify right side
    157,735.86x = 18,745,087,073.99
  5. Step 5: Solve for x
    x = 18,745,087,073.99/157,735.86
  6. Step 6: Final answer
    x = 118,838.46

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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.