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Finding the Fourth Proportional to 101,282.90, 139,741.95 and 58,260.14

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Solution

The fourth proportional to 101,282.90, 139,741.95 and 58,260.14 is: 80,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,282.90 : 139,741.95 = 58,260.14 : x
  2. Step 2: Convert to fraction form
    101,282.90/139,741.95 = 58,260.14/x
  3. Step 3: Cross multiply
    101,282.90x = 139,741.95 × 58,260.14
  4. Step 4: Simplify right side
    101,282.90x = 8,141,385,570.87
  5. Step 5: Solve for x
    x = 8,141,385,570.87/101,282.90
  6. Step 6: Final answer
    x = 80,382.63

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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.