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Finding the Fourth Proportional to 157,220.61, 216,945.64 and 92,640.93

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Solution

The fourth proportional to 157,220.61, 216,945.64 and 92,640.93 is: 127,833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,220.61 : 216,945.64 = 92,640.93 : x
  2. Step 2: Convert to fraction form
    157,220.61/216,945.64 = 92,640.93/x
  3. Step 3: Cross multiply
    157,220.61x = 216,945.64 × 92,640.93
  4. Step 4: Simplify right side
    157,220.61x = 20,098,045,849.05
  5. Step 5: Solve for x
    x = 20,098,045,849.05/157,220.61
  6. Step 6: Final answer
    x = 127,833.40

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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.