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Finding the Fourth Proportional to 157,504.65, 215,617.49 and 156,379.02

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Solution

The fourth proportional to 157,504.65, 215,617.49 and 156,379.02 is: 214,076.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,504.65 : 215,617.49 = 156,379.02 : x
  2. Step 2: Convert to fraction form
    157,504.65/215,617.49 = 156,379.02/x
  3. Step 3: Cross multiply
    157,504.65x = 215,617.49 × 156,379.02
  4. Step 4: Simplify right side
    157,504.65x = 33,718,050,999.16
  5. Step 5: Solve for x
    x = 33,718,050,999.16/157,504.65
  6. Step 6: Final answer
    x = 214,076.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.