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Finding the Fourth Proportional to 65,726.74, 90,707.65 and 37,432.43

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Solution

The fourth proportional to 65,726.74, 90,707.65 and 37,432.43 is: 51,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,726.74 : 90,707.65 = 37,432.43 : x
  2. Step 2: Convert to fraction form
    65,726.74/90,707.65 = 37,432.43/x
  3. Step 3: Cross multiply
    65,726.74x = 90,707.65 × 37,432.43
  4. Step 4: Simplify right side
    65,726.74x = 3,395,407,552.12
  5. Step 5: Solve for x
    x = 3,395,407,552.12/65,726.74
  6. Step 6: Final answer
    x = 51,659.45

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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.