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Finding the Fourth Proportional to 124,409.78, 186,669.80 and 65,231.37

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Solution

The fourth proportional to 124,409.78, 186,669.80 and 65,231.37 is: 97,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,409.78 : 186,669.80 = 65,231.37 : x
  2. Step 2: Convert to fraction form
    124,409.78/186,669.80 = 65,231.37/x
  3. Step 3: Cross multiply
    124,409.78x = 186,669.80 × 65,231.37
  4. Step 4: Simplify right side
    124,409.78x = 12,176,726,465.47
  5. Step 5: Solve for x
    x = 12,176,726,465.47/124,409.78
  6. Step 6: Final answer
    x = 97,875.96

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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.