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Finding the Fourth Proportional to 157,418.54, 217,237.75 and 85,798.62

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Solution

The fourth proportional to 157,418.54, 217,237.75 and 85,798.62 is: 118,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,418.54 : 217,237.75 = 85,798.62 : x
  2. Step 2: Convert to fraction form
    157,418.54/217,237.75 = 85,798.62/x
  3. Step 3: Cross multiply
    157,418.54x = 217,237.75 × 85,798.62
  4. Step 4: Simplify right side
    157,418.54x = 18,638,699,161.91
  5. Step 5: Solve for x
    x = 18,638,699,161.91/157,418.54
  6. Step 6: Final answer
    x = 118,402.19

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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.