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Finding the Fourth Proportional to 124,475.48, 171,727.26 and 76,645.88

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Solution

The fourth proportional to 124,475.48, 171,727.26 and 76,645.88 is: 105,741.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,475.48 : 171,727.26 = 76,645.88 : x
  2. Step 2: Convert to fraction form
    124,475.48/171,727.26 = 76,645.88/x
  3. Step 3: Cross multiply
    124,475.48x = 171,727.26 × 76,645.88
  4. Step 4: Simplify right side
    124,475.48x = 13,162,186,962.69
  5. Step 5: Solve for x
    x = 13,162,186,962.69/124,475.48
  6. Step 6: Final answer
    x = 105,741.20

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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.