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Finding the Fourth Proportional to 79,509.99, 109,726.10 and 43,702.32

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Solution

The fourth proportional to 79,509.99, 109,726.10 and 43,702.32 is: 60,310.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,509.99 : 109,726.10 = 43,702.32 : x
  2. Step 2: Convert to fraction form
    79,509.99/109,726.10 = 43,702.32/x
  3. Step 3: Cross multiply
    79,509.99x = 109,726.10 × 43,702.32
  4. Step 4: Simplify right side
    79,509.99x = 4,795,285,134.55
  5. Step 5: Solve for x
    x = 4,795,285,134.55/79,509.99
  6. Step 6: Final answer
    x = 60,310.47

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1.5x scale

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.