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Finding the Fourth Proportional to 124,921.48, 187,398.63 and 65,760.39

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Solution

The fourth proportional to 124,921.48, 187,398.63 and 65,760.39 is: 98,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,921.48 : 187,398.63 = 65,760.39 : x
  2. Step 2: Convert to fraction form
    124,921.48/187,398.63 = 65,760.39/x
  3. Step 3: Cross multiply
    124,921.48x = 187,398.63 × 65,760.39
  4. Step 4: Simplify right side
    124,921.48x = 12,323,406,994.27
  5. Step 5: Solve for x
    x = 12,323,406,994.27/124,921.48
  6. Step 6: Final answer
    x = 98,649.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.