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Finding the Fourth Proportional to 79,510.71, 109,726.95 and 43,701.32

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Solution

The fourth proportional to 79,510.71, 109,726.95 and 43,701.32 is: 60,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,510.71 : 109,726.95 = 43,701.32 : x
  2. Step 2: Convert to fraction form
    79,510.71/109,726.95 = 43,701.32/x
  3. Step 3: Cross multiply
    79,510.71x = 109,726.95 × 43,701.32
  4. Step 4: Simplify right side
    79,510.71x = 4,795,212,992.77
  5. Step 5: Solve for x
    x = 4,795,212,992.77/79,510.71
  6. Step 6: Final answer
    x = 60,309.02

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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.