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Finding the Fourth Proportional to 107,708.63, 148,641.32 and 67,409.51

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Solution

The fourth proportional to 107,708.63, 148,641.32 and 67,409.51 is: 93,027.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,708.63 : 148,641.32 = 67,409.51 : x
  2. Step 2: Convert to fraction form
    107,708.63/148,641.32 = 67,409.51/x
  3. Step 3: Cross multiply
    107,708.63x = 148,641.32 × 67,409.51
  4. Step 4: Simplify right side
    107,708.63x = 10,019,837,972.27
  5. Step 5: Solve for x
    x = 10,019,837,972.27/107,708.63
  6. Step 6: Final answer
    x = 93,027.26

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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.