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Finding the Fourth Proportional to 92,738.51, 139,060.98 and 66,069.26

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Solution

The fourth proportional to 92,738.51, 139,060.98 and 66,069.26 is: 99,070.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,738.51 : 139,060.98 = 66,069.26 : x
  2. Step 2: Convert to fraction form
    92,738.51/139,060.98 = 66,069.26/x
  3. Step 3: Cross multiply
    92,738.51x = 139,060.98 × 66,069.26
  4. Step 4: Simplify right side
    92,738.51x = 9,187,656,043.47
  5. Step 5: Solve for x
    x = 9,187,656,043.47/92,738.51
  6. Step 6: Final answer
    x = 99,070.56

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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.