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Finding the Fourth Proportional to 101,293.74, 139,804.70 and 66,777.91

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Solution

The fourth proportional to 101,293.74, 139,804.70 and 66,777.91 is: 92,166.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,293.74 : 139,804.70 = 66,777.91 : x
  2. Step 2: Convert to fraction form
    101,293.74/139,804.70 = 66,777.91/x
  3. Step 3: Cross multiply
    101,293.74x = 139,804.70 × 66,777.91
  4. Step 4: Simplify right side
    101,293.74x = 9,335,865,674.18
  5. Step 5: Solve for x
    x = 9,335,865,674.18/101,293.74
  6. Step 6: Final answer
    x = 92,166.26

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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.