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Finding the Fourth Proportional to 124,608.92, 171,851.76 and 76,174.16

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Solution

The fourth proportional to 124,608.92, 171,851.76 and 76,174.16 is: 105,053.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,608.92 : 171,851.76 = 76,174.16 : x
  2. Step 2: Convert to fraction form
    124,608.92/171,851.76 = 76,174.16/x
  3. Step 3: Cross multiply
    124,608.92x = 171,851.76 × 76,174.16
  4. Step 4: Simplify right side
    124,608.92x = 13,090,662,603.26
  5. Step 5: Solve for x
    x = 13,090,662,603.26/124,608.92
  6. Step 6: Final answer
    x = 105,053.98

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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.